While I do empathize with bad UX this story does feel like a bit of an unnecessary dive across services without trying to fix the root issues. If your contact

While I do empathize with bad UX this story does feel like a bit of an unnecessary dive across services without trying to fix the root issues. If your contact info is not stable then you are going to have a hell of a time with 2FA through your phone. There are alternatives, both hardware and software that will fix this problem for you. Have you looked at what your bank supports? If the answer is "yes and they only use SMS based 2FA" then fine - the next issue is figuring out why your email provider isn't sending an image. Is it too large? Gmail supports multiple quality settings and has a will tell you the attachment is too large to send - for a single image you should be able to select a lower quality to send it. This dive into other services sounds like a waste of time. "Good developers" would at least try and understand what is broken before throwing random OTS storage services at it.