For some reason my Mortgage Interest, Property Taxes, donations etc ..aren't being deducted, When I compared 2019 (which it did deduct) to 2020, 2020 was all zero for deductions? is there a software error? or has there an income limit I reach which prevent me from getting any sort of deductions?
Since you are already comparing your 2019 return to your 2020 return, look at the amounts line-by-line to spot differences that may have triggered the Standard Deduction for you this year, when you were able to use Itemized Deductions last year.
A change in Income, less Medical Bills?
If you want to see the numbers TurboTax calculated, click this link for info How to Switch from Standard to Itemized Deductions (or vice versa).
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