While bug bounties are an accepted form of paying researchers to discover vulnerabilities in code, this seems more like advertising for someone to reverse engineer a third party product. That is a grey legal area in many jurisdictions, and could end up with you getting sued by the vendor of the product, so from that perspective it's undoubtedly not a great idea to advertise what you are attempting.
My personal take on soliciting paid advice via StackExchange is to not allow that since we're looking for advice that can be used for multiple future visitors to the site, and paid gigs like this tend to be very narrow in scope, and specific to the problem at hand.
In this specific instance, it's fairly obvious that you've tried various approaches to solving the problem but are running up against an unknown vendor-created problem. I'd say out of the gate, that's going to make for a very localized answer that won't be subsequently useful to future visitors.
Having said all that, this is a community-run site, and I welcome thoughts from others on the acceptability of this style of question.