Have QBooks 2020 using win 8.1... Script errors and nothing works .  Spent over 4 hrs going thru steps with QB tech last week.   They finally said they think win 8.1 does not support a higher level of dot net needed .

Using a win10 PC all works fine and ccard processing is normal as it prev was with my win 8.1 PCwhen using QBooks 2017.    Are you aware that apparently QB2020 and merchant processing are incompatible with win 8.1.    I need to use main machine for QB2020 that is win 8.1 but can not now .   Using the laptop win10 machine is not an option.   Win 8.1 machine can not support win 10 upgrade.   Requires a new PC. 

Any suggestion.     BTW QB was called to confirm win8.1 is compatible b4 we purchased and they said yes.  All other processing works ok but doing merchant processing never works and script errors.   I can not even sign into merchant center using win 8.1 qbooks.   I am really thinking it is some much more basic to allow win 8.1 and merch svcs to work with qb2020.