I had this problem and it turned out to be an upstream issue with MicroG which was eventually patched. If you have an error message you can search for existing issues on /e/OS' gitlab/forum.
Revolut stopped working for me for a while with the error that the bootloader wasn't recognised and rooted phones aren't supported. After about a month an OS update solved it.
Revolut stopped working for me for a while with the error that the bootloader wasn't recognised and rooted phones aren't supported. After about a month an OS update solved it.