Deductions & credits

I am having the same issue, where do you see the questions. "Should this mortgage have limited interest"  I have a $900k mortgage and in 2020 I refinanced my original mortgage and a non cash out loan and now it is limited me to the $750k limits.  Everything I read said as long as you didn't take cash out you should still be able to go up to the $1m limits and never had an issue until trying to do my 2020 taxes.  I spoke to a CPA with turbo tax and they seamed to agree with me that I should still be able to take the full deduction but it does not seam to be working.