If you have emailed them multiple times then i think the support team is not trying to help you out for any other reason ?
As you have said some modules worked for you so with the one which is having a malfunctioning please check out & look if it’s conflicting with any of the code or script then have it rectified from the support team.
As with the rest if they still don’t provide any support or help then i can provide you some paid support for the work