A reminder to leave a negative review for the apps that force you to use google play services or completely don't work on custom android ROM's.
https://play.google.com/store/apps/details?id=com.smart_id This was the app. A lot of banks use it here in Lithuania for logging in, confirming transactions.
There are many reasons to use a custom ROM and not a single reason to respond to your customer like that. Although their customers are banks and governments, so they couldn't care less about the actual users.