Their email is:
help@gigspot.com
My experience with timing of replies is mixed.
I did 5 shops for an MSC that I did not know was banned from MSPA, and they've posted nothing since, so I've got concerns as well.
The platforms do not pay us, the MSC's do, but I hope you're able to get some answers and you downloaded a copy of your contract (I do this for every company). I also save date and time stamped screen shots of every submission now as well, after some interesting experiences.
Good luck.