diff --git a/config.json b/config.json
index b3340da..6356d1b 100644
--- a/config.json
+++ b/config.json
@@ -17,7 +17,8 @@
         "queue": "data/queue",
         "sent": "data/sent",
         "index": "data/index.json",
-        "submit": "data/submit.json"
+        "submit": "data/submit.json",
+        "blocked": "data/blocked.json"
     },
     "posting": {
         "channel": 0,
@@ -54,6 +55,6 @@
         "link": null
     },
     "submission": {
-        "limit": 30
+        "timeout": 30
     }
 }
\ No newline at end of file
diff --git a/data/blocked.json b/data/blocked.json
new file mode 100644
index 0000000..0637a08
--- /dev/null
+++ b/data/blocked.json
@@ -0,0 +1 @@
+[]
\ No newline at end of file
diff --git a/main.py b/main.py
index 1a46db8..0607730 100644
--- a/main.py
+++ b/main.py
@@ -168,35 +168,52 @@ def subLimited(user):
     else:
         submit = jsonLoad(configGet("submit", "locations"))
         if str(user.id) in submit:
-            if (time.time - submit[str(user.id)]) > configGet("limit", "submission"):
+            if (time.time() - submit[str(user.id)]) < configGet("timeout", "submission"):
                 return True
             else:
                 return False
         else:
             return False
 
+def subBlock(user):
+    blocked = jsonLoad(configGet("blocked", "locations"))
+    if user.id not in blocked:
+        blocked.append(user.id)
+    jsonSave(blocked, configGet("blocked", "locations"))
+
+def subUnblock(user):
+    blocked = jsonLoad(configGet("blocked", "locations"))
+    if user.id in blocked:
+        blocked.remove(user.id)
+    jsonSave(blocked, configGet("blocked", "locations"))
+
 @app.on_message(filters.photo | filters.video | filters.animation)
 def get_submission(_, msg):
-    if not subLimited(msg.from_user):
-        msg.copy(configGet("admin", "reports"), reply_markup=InlineKeyboardMarkup(
-            [
-                InlineKeyboardButton(text="✅ Accept", callback_data=f"sub_yes_{msg.from_user.id}_{msg.id}"),
-                InlineKeyboardButton(text="❌ Deny", callback_data=f"sub_no_{msg.from_user.id}_{msg.id}")
-            ],
-            [
-                InlineKeyboardButton(text="☠️ Block sender", callback_data=f"sub_block_{msg.from_user.id}")
-            ]
-        ))
-        msg.reply_text(f"Media has been submitten.\nWe'll notify you whether it will be accepted or not soon.")
-        subLimit(msg.from_user)
-    else:
-        msg.reply_text(f'You can only submit 1 media per {configGet("limit", "submission")} seconds')
+    if msg.from_user.id not in jsonLoad(configGet("blocked", "locations")):
+        if not subLimited(msg.from_user):
+            msg.copy(configGet("admin", "reports"), reply_markup=InlineKeyboardMarkup([
+                    [
+                        InlineKeyboardButton(text="✅ Accept", callback_data=f"sub_yes_{msg.from_user.id}_{msg.id}"),
+                        InlineKeyboardButton(text="❌ Deny", callback_data=f"sub_no_{msg.from_user.id}_{msg.id}")
+                    ],
+                    [
+                        InlineKeyboardButton(text="☠️ Block sender", callback_data=f"sub_block_{msg.from_user.id}")
+                    ],
+                    [
+                        InlineKeyboardButton(text="🏳️ Unblock sender", callback_data=f"sub_unblock_{msg.from_user.id}")
+                    ]
+                ]
+            ))
+            msg.reply_text(f"Media has been submitted.\nWe'll notify you whether it will be accepted or not soon.", quote=True)
+            subLimit(msg.from_user)
+        else:
+            msg.reply_text(f'You can only submit 1 media per {configGet("timeout", "submission")} seconds')
 
 @app.on_callback_query(filters.regex("sub_yes_[\s\S]*_[\s\S]*")) # type: ignore
 def callback_query_yes(app, clb): # type: ignore
     fullclb = clb.data.split("_")
     try:
-        submission = app.get_messages(fullclb[2], fullclb[3])
+        submission = app.get_messages(int(fullclb[2]), int(fullclb[3]))
     except:
         clb.answer(text=f"Submission message no longer exist", show_alert=True)
         return
@@ -205,29 +222,33 @@ def callback_query_yes(app, clb): # type: ignore
     except:
         clb.answer(text=f"Could not download submission", show_alert=True)
         return
-    submission.reply_text(f"✅ Submission approved and accepted")
+    submission.reply_text(f"✅ Submission approved and accepted", quote=True)
     clb.answer(text=f"✅ Submission approved", show_alert=True)
 
 @app.on_callback_query(filters.regex("sub_no_[\s\S]*_[\s\S]*")) # type: ignore
 def callback_query_no(app, clb): # type: ignore
     fullclb = clb.data.split("_")
     try:
-        submission = app.get_messages(fullclb[2], fullclb[3])
+        submission = app.get_messages(int(fullclb[2]), int(fullclb[3]))
     except:
         clb.answer(text=f"Submission message no longer exist", show_alert=True)
         return
-    submission.reply_text(f"❌ Submission reviewed and declined")
+    submission.reply_text(f"❌ Submission reviewed and declined", quote=True)
     clb.answer(text=f"❌ Submission declined", show_alert=True)
 
 @app.on_callback_query(filters.regex("sub_block_[\s\S]*")) # type: ignore
 def callback_query_block(app, clb): # type: ignore
     fullclb = clb.data.split("_")
-    app.send_message(fullclb[2], "You were blocked and you can't submit media anymore.")
-    blocked = app.block_user(fullclb[2])
-    if blocked:
-        clb.answer(text=f"User {fullclb[2]} has been blocked", show_alert=True)
-    else:
-        clb.answer(text=f"Could not block {fullclb[2]}", show_alert=True)
+    app.send_message(int(fullclb[2]), "You were blocked and you can't submit media anymore.")
+    subBlock(int(fullclb[2]))
+    clb.answer(text=f"User {fullclb[2]} has been blocked", show_alert=True)
+
+@app.on_callback_query(filters.regex("sub_unblock_[\s\S]*")) # type: ignore
+def callback_query_unblock(app, clb): # type: ignore
+    fullclb = clb.data.split("_")
+    app.send_message(int(fullclb[2]), "You were unblocked and you can now submit media.")
+    subUnblock(int(fullclb[2]))
+    clb.answer(text=f"User {fullclb[2]} has been unblocked", show_alert=True)
 #===========================================================================================================================================