TPI, I have been Struggling for day’s now to import client payments Each and every time I get errors close fix upload new error the best error is no error just no joy

I use TPI on my Desktop for years, i just need to find something that works to upload payment from clients that works with out killing my bank, as I was an old QBD2016 user i had to export 3yr of date and had to upload it to QBO, just can't get the upload of client payments to work,