I had over 3500 entrants in my first Qualifying Round and finished well enough to advance based on that inflated and incorrect number. When the final tally came I too received a -1 position and told I didn’t qualify to advance, but was given another opportunity. Another member of my CC experienced the same thing.
I did go again and everything functioned normally…and I’m leading my grouping of 20. WGT will reimburse the 50 credits for the round that went awry. You just have to write to their CS department.