group messaging issues

I got an 11 pro max a couple of weeks ago, everything was working fine until this morning. I have multiple group messaging threads with my employees, some android and others iphone. Like i mentioned everything was working normal as of last night but for some reason this morning any group messages that include an android user will not work correctly. The messages I send are saying not delivered, anything they send i cannot see. I can message them individually. Ive restarted my phone, it is updated to the latest software, reset my network setting, put on airplane mode and taken off, messages settings are set up correctly to receive imessages, group messages, sms and mms. Nothing was updated last night for it to just out of nowhere stop working. Please help.