iMessage Issues

Earlier today, my iMessage service started acting up. These are the things that have happened:

• My blue text bubbles automatically were undeliverable
• My text bubbles are now green although iMessages in settings is turned on
• I’m unable to send anything in a group chat

I’m still able to receive messages from others, both individually and in group chats. I’ve tried multiple things to try and fix it:

• turn my phone off then back on
• turn iMessage off then back on
• turn iMessage off, turn phone off then on, turned iMessage back on
• reset network settings
• erased and restored my phone

None of these seemed to work, and I wasn’t able to find any issues similar to this searching through google. My friend said this happened to her once, she did all the things I did and was even sent a new phone because support thought it could have been the phone. That didn’t seem to be the issue, but then her messages were returned to “normal” a couple days later. Does anyone have an explanation as to why this happened all of a sudden and is waiting it out a couple of days the only thing left I could do?

Thanks in advance!