Someone sent me a PM asking a question a while ago, and I tried to answer. I knew it didn't sent because, one, they didn't respond, and two, I looked in the "Sent" tab, not seeing the message I thought I'd sent.

They later sent something else, and yet again, I couldn't respond. It would let me type in the message, but just wouldn't send. I tested it with my sister and it worked perfectly fine.

I was able to message them before. I restarted my pc a minute or so ago, then tried again, wouldn't work. I can't tinychat them either. I'm not sure if they blocked me for some reason and have no way to tell.

I just feel bad. Hope they don't think I'm ignoring them. :>

(Also, Twinkle, pinged you to let you know what was happening.)

This most likely means that they have you blocked. It may have been incidental especially if they are actively trying to communicate with you.

They should be able to go to the 'Contacts' part of the Social page, switched to the Blocked drop down and then remove you.

Thank you, I'm able to message them back now. Happy Holidays!