Thank you all for the responses! I was on the fiancee visa and we did meet all the requirements (such as financial). They only requested further information on the cohabitation proof for these six months. I thought this would be the case but had a bit of hope as the letter did not say I didn't meet ...

Dear forum members, Due to a lack of attention and naivety, I found myself in a difficult situation and I am looking for some guidance. For context, I initially moved to the UK in 2018 under a fiancee visa and applied for a spouse visa under the FLR(M) form shortly after. I met all the requirements ...