Two of my credit unions (the only ones I tried) 'stealth block' this by refusing to accept checks I try to take pictures of. It will just refuse to work with a no descriptive error message. These are large credit unions.

One one hand with all the fraud and identity scams I know they have a difficult job. But, on the other, they also rely on sending me txts to login-no proper 2fa like TOTP security codes.