The public hospitals are and extremely affordable almost free, if someone cannot afford treatment in public hospitals then frankly should not travel and home, therefore I don’t see any value of medical insurance. Pay out of pocket private hospital or public hospitals
Thailand immigration does recognise crypto as a currency or value, so try to avoid investing in crypto, immigration has the right to ask you at border entry to demonstrate financial fitness, do not show or mention crypto, this is synonymous with fraud and scam in Thailand
Bank statement need to be produced on the same day you apply, I have provided them few days old statement, it was not accepted then I was asked to provide it again I produced one online in few minutes that was accepted
Digital download is the only viable option from your mobile app and make sure to download the latest on the same day you apply, if the statement is few days old, they will request up to date statement