Anonymous participant personally I think these difficulties put in the way of applicants are seen as a money spinner for the embassies. They know people will reapply and pay another fee. Just my opinion.
I’ve tried to find out how this works if you’re not going for the working remotely. Dental/medical/cooking class etc. Cooking classes could be a one day thing or go on for weeks. I’ve yet to find any information at all online that gives clarity for this particular classification.
The price should be the equivalent of 10,000 baht in whatever currency. If the cost is considerably more you may well have been duped into a scam site.