I had the same issue (i.e., having a negative return on my side business, rideshare in my case). I followed KathrynG3's instructions above, and it worked for me. You essentially have to delete the form causing the problem, then re-create it. I ended up going through the process again (in other words, creating the form through the "interview" questions and getting a "maximum value" error) but it only took me through the "loop" one time.
