are you using autofill when filing? It wont work if you do. Your tm30 also needs to be up to date and registered at your home address. That is why it would not work for me.
I renewed mine last month at my local immigration office. Go to your office and ask for their requirements. If you have not satisfied the financial requirements then you may have to leave Thailand and start again.
Your plan gives you 90 days to open a Thai bank account in your name and deposit the required
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0 baht. Next, go to you immigration office and ask them for their requirements to apply for 90 day non o and subsequently the 12 month extension. Offices vary in their requirements so you can get misleading information here.