Locked out of Android RVN wallet

I'm 5 months now into crypto. In my early days I got RVN Wallet on my Android phone and I must have noted down my PIN and seed, as I have done for my other wallets. However I seem to have failed to transfer it to the file that I printed and I threw away the hand written paper. Now the app opens with my fingerprint, but without the seed or PIN I cannot do much.

Is there a way to transfer the funds? Thankfully it's not much, 850 coins or so, but can I transfer small sums at a time or should I consider it burned and donated to the cause?