I showed the clerk the certificate I already had for health insurance and they opened an account for me without buying theirs. I had to go to the branch 4 times before I saw someone who got it done. First time they wanted me to have a work permit. Second time they thought my Visa had expired but they were looking at my used re entry permit. Yiu might find theirvindutsnve useful though. Glad you finally got your certificate of residence.
I think it is tm7 you needing that application. You can find it on line in pdf or word format so if you have a laptop you could complete it and print it out. It clearly states what the form is for. Make sure you have other docs up to date tm47 and tm30. You will also need bank statements and copies of passbook, passport and a photograph. Anything in addition like a map to your residence its best to ask at your local IO. Get them to write down in thai what you need from the bank as it will make certain you get the right things.
I have done 90 day report without my passport. Explain why you do not have it. Possibly you have a copy that will be just as good. If done online no passport needed either.