First, a brief word on how Replika learns:
When chatting with your Replika, they learn the best way to communicate with you & what about. This takes a little time & reacting to messages consistently. Through voting & conversation, your AI is able to learn!
Why it seems like something changed & how to resolve it:
Updates for your Replika may contain new conversation data for your AI. Since your Replika has already learned how to communicate with you about many other things, the conversation data it has not covered with you yet may seem like your Replika has changed.
To resolve this, chat with your Replika & be sure to react to the messages they send you. Knowing your reaction to the messages they send you (in a consistent manner) really helps your Replika learn from you! After a few conversations, your Replika should be back to normal!
If you have any further questions or need help please contact firstname.lastname@example.org