Great app but…help! – Monal - XMPP chat Review

Monal is the best app for xmpp I’ve found on App Store. However, after starting last week I started getting lots of error messages sent to me and other contacts. In the last couple days I’ve gotten over 200, but I didn’t change anything. Mostly they are: There was an error decrypting this encrypted message (Signal error). To resolve this, try sending an encrypted message to this person. (Error Domain=org.whispersystems.SignalProtocol Code=3 "Duplicate Message" UserInfo={NSLocalizedDescription=Duplicate Message}) I’ve tried every option suggested online but can’t figure out how to fix it. Send an w cry message back just causes more messages to come. I cant figure out how to send a message to you directly, so I’m trying here. Please help!!
Review by t.and.m on Monal - XMPP chat.