I called again this past Wednesday.  On the phone for an hour and a half only to discover (at least in my case) that the program is not calculating the tax--I have to calculate and put the amount in the PA K-1 worksheet.  Then it flows everywhere--Sch NW, PA-40 and K-1.  I was able to get it to pay electronically.  No explanation from support as to why it calculated for 2019 and is not calculating this year.  They seemed to have no idea what I was talking about and were, quite frankly, useless.  Like you I have wasted way too much time (over 2 weeks) on this issue because I thought ProSeries needed to make an update.  I asked what I was paying over $2,000 for when I have to do calculations and just got crickets.