Security Check Failure

[Fiadoyor]

I'm having issues using some of my apps since the beta update; for example, I can't fully use the Amazon Flex app, and I can't log in to some apps because it says "security check failure." I hope this gets fixed as soon as possible. 

[TheVampireRove]

These apps likely only allow devices running official software versions. Your apps should begin working as normal once you receive the stable build of One UI 9.0.