Write to ecomcg90@gmail.com. One person reads it, so an answer takes as long as it takes, but every message is read.
Two things are worth knowing, because they answer most of what people ask.
Your memories are not on a server anywhere. Nobody at Remora can look at them, restore them, or recover them for you. That is the point of the app, and it is also its one hard limit: if a memory is gone from your iPhone and gone from your backup, it is gone. Settings holds an Export that writes everything to a zip file. It is worth using now and then.
Please do not send screenshots of your memories. If a message would need one to make sense, describe what happened instead. Anything you do send sits in an ordinary email inbox for no longer than 12 months after the conversation ends, and is deleted on request.
Purchases go through Apple, so refunds do too. Use reportaproblem.apple.com and sign in with the Apple Account that made the purchase. Remora cannot issue a refund itself and cannot see your payment details.
On your iPhone, open Settings, tap your name, then Subscriptions. Cancelling stops the renewal and leaves everything you have already saved readable, searchable and exportable, permanently.