I hope the support was able to clear it. The demo version has no plug ins.
One hint, based on my question about it, I was reminded to suggest always to check if the latest version is installed—updated. I hope you get your functionality as expected ASAP.
My main concern is only that you get what works for you.
I haven’t had suggested this link, as the R17 plug ins are not available there, and the R16 seems to be nearly a year old.
I hope the support is replying quickly, so things start to work for you smoothly. If you have a minute to share any findings, I guess other people who will run into this might be happy to read it.