If the screen shakes and/or your reaction doesn’t appear, this person has blocked you. If you’re using a phone, you might also see “Reaction Blocked. " Reactions might also fail if you don’t have reaction permissions for the channel. If you can react to everyone else’s messages except this person, they’ve blocked you.
If you’re blocked, you’ll see a message that says “Hm, didn’t work. Double check that the capitalization, spelling, any spaces, and numbers are correct. " If you’re not blocked, the friend request will either go through as normal, or you might see “(username) is not accepting friend requests. " The “not accepting friend requests” message just happens when someone turned off friend requests (or is only accepting adds from friends of friends and/or server members). [1] X Research source
If you’re blocked, you’ll see a message that says “Hm, didn’t work. Double check that the capitalization, spelling, any spaces, and numbers are correct. " If you’re not blocked, the friend request will either go through as normal, or you might see “(username) is not accepting friend requests. " The “not accepting friend requests” message just happens when someone turned off friend requests (or is only accepting adds from friends of friends and/or server members). [1] X Research source
If you send the DM from your computer, the error message will come from Clyde bot. If you send the DM from your Android or iPhone, you’ll see the same message, but it’ll show up in an Error window, not from Clyde bot.
Ask a mutual friend to look at the person’s profile to see if looks blank to them, too. If the mutual friend sees profile content but you don’t, you’re blocked.
