Some VST plugins aren't rendering

[goldberg1138]

I'm working on recording some guitar tracks. I like to render my project periodically so I can listen periodically when I'm out and try to work on new ideas. I've found that some VST plugins I'm running for my guitar are disabled or are being bypassed when I render the project. Sometimes just the VST isn't there, and other times the entire track is not included in the mix. When I go back to Reaper on my computer everything plays back normally. Why aren't the plugins working properly when I render?

[metal_priest]

are they demo versions?

[Ollie]

What are the plug-ins exactly? Does online-rendering fix that?

[goldberg1138]

One of the ones that wasn't working was ampLion. I had intended to use the tone from that one. Another was a reverb plugin called L1V from Anwida Soft. They both worked but eventually stop any audio from being heard from whatever track they're used on. I just stopped using either of them. Figuring out how to fix them would definitely be better.