At this point if import still isn't working it never will for 2024 filing. You should just enter the 1099-INT manually, it's usually straightforward (and quicker than all this importing imo) - not sure what TT version you are on but you should see a function to add new investment, "skip this import" and then enter the information. Unless you have some state requirement for more info on the 1099 all you need is a payer name and Box 1 (or others with amounts) - all the other payer information (address, TIN etc) is not needed for filing.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/enter-form-1099...
