I use 3 Ulefone Armor x13 as PDA/POS for NFC card payments.
For some reason a few days ago the banking app that I use stopped working. When I looked at the integrity only MEETS_BASIC_INTEGRITY is green. Is it worth rooting the phone and applying this patch or is there a better way to fix it?
The phones are all stock with no mods. just basic wifi settings and Google account login.

Any help would be appreciated. Sorry if this is semy off-topic.