As an aside, when, once upon a time, I went through the family visa process, I sent bank statements printed from my printer at home. Is this a new requirement to have them stamped/certified by the bank?
I’ve read that others have managed to get the application approved without stamped statements, but the UK HO guidance specifically request stamped statements, especially if coming from a digital banking provider with no physical branches.
So I’m at a loss, and if Monzo only stamp the first page, this is also useless as the UK HO states it must be stamped on every page…
Check that you really need them. OH needed biometrics done for a residence permit. She didn’t need to pay anything for these but on turning up the company were quite insistent that she needed to pay over £200. She didn’t. It really was free but she needed to be just as insistent as they were.