What do you think about Gusto's Payroll Offset for R&D Tax Credit?

We signed up to Gusto's payroll offset services for the R&D credits we claimed. Their website states that the offset mechanism starts the quarter after you file. However, they start charging you from April (at $328.59/month). So, best case, you pay for 3 extra months before the service starts, or more likely, if you've filed in the next quarter (like a lot of other start-ups), 6 months of fees before they do any type of offsetting (which is also limited to 12 months). This did not feel right. When I reached out to Gusto, I was told I pressed the "continue" button when submitting so have agreed (which I understand). BUT - there is no information in their sales pitch on their website about this, nor in their terms of service. I think is is misleading, but I thought perhaps I'm being naive? Anyone else had a similar issue?