There's been a couple of us posting about this. One other person and I have a Halifax account. I had an exclamation mark about PSP KYC, re added the same bank account. Withdrew that week's money after waiting the 3 days, no problem.

Next time I went to withdraw it said Assign bank account - after several attempts as the link for Approve/Deny often didn't come through... I saw an exclamation mark against the bank account again. Asked Seller Support....mmmm - you can probably guess how that went? Several screenshots later and my final reply was telling me how long disbursement takes!!

So, I've opened a Virgin M business bank account and got that verified within an hour. It DID assign, but I only did it yesterday, so 2 more days to wait to see if it works or not. (no fees on automated debits and credits, just if you use the card with this bank account)

However, I hadn't fallen into the period of not dealing with it before the 45 days penalty kicked in.

If your bank account is suffering the same issue, then it might be worth applying for a different business bank account and assigning ready for when the 45 days has passed.