I am on a group text with 21 business colleagues. When I try to reply to the text, I get an error message on the RingCentral app that says "Cannot send message - exceeded maximum number of recipients for a Group MMS." One of the RC support team members said that I could use an addon app to prevent this issue, but he never sent me the info. Any assistance would be appreciate especially since it seems pretty silly that I can't reply to a simple group text through the RC app. Thank you.