Facebook Messenger is a feature-rich platform that allows users to connect and communicate effortlessly with friends and family. One of its features is the ability to ‘restrict’ someone, limiting their interactions with you without the need for outright blocking. If you suspect someone might have restricted you, here’s how you can get a clue:

1.No Read Receipts: If your messages are delivered but never read (the recipient’s profile picture never appears next to the message), this could indicate that you’ve been restricted.

2.Delayed Responses: A sudden or consistent delay in responses might imply the person doesn’t receive your messages unless they check your chat thread.

3.Unchanged Chat Status: Restricted individuals cannot see when you’re active or when you last logged in. If their status doesn’t change, it might be a sign.

4.Missing Profile Updates: Restrictions could prevent you from seeing new profile updates or the online presence of a user.

5.Checking Group Chats: If you’re both part of the same group chat, observe their activity there. Interaction in the group but not directly could be indicative of a restriction.

6.Profile Access Changes: Inability to view certain contents on their profile which was previously accessible might imply restrictions.

7.Messaging Functionality: You may notice subtle changes in your messaging capabilities; perhaps certain reactions or reply features are unavailable.

8.Direct Contact Verification: A direct way to clear doubts is to ask them through another platform about any issue with Messenger.

Remember, some signs could be just due to changed privacy settings or other personal reasons unrelated to you being restricted. Always consider multiple factors before jumping to conclusions.