Sorry for your first experience.
However glad you quickly reached out to report this.
MixVibes is in the business of digital DJ/VJ for over 20 years. Being involved only 6 years of these I only can tell you that usually critical bugs are fixed pretty quick. I would expect days the most in this case.
However being a moderator (like the others mods) we here are just 'experienced' users around the world trying to get other users going asap. Meanwhile the devteam in France tries to dream up new stuff and fix things (because they were dreaming...
As mentioned before the 'audio version' of RML does have the proper syphon support so it's not a next release feature already used in marketing.
The error in the link has been acknowledged. So it's a little unfortunate you proceeded the purchase.
I would suggest you try to work out direct by mail with firstname.lastname@example.org
. This is the easiest thing as you can share your data without making it public using the forum.
Please be aware that the 3rd party you paid to does not share all info to MV, so please provide appropriate details in the mail...
Hope your current experience soon will be changed into possitive... meanwhile I'll have to wait for the WIn version before having the ability to experience to new developments...