CentOS

According to the person who is maintaining wireguard for Fedora and CentOS:

the wireguard mailing list is most likely the best spot for this.

I think there is also an IRC channel for wireguard. Hope you can get help from those venues.

As referenced in the blog post, many people found this youtube tutorial video quite helpful.

You may want to check to see if your controller is supported in CentOS/RHEL 8. See this ELRepo's blog for more into.

How did you install wireguard? Using elrepo's packages?

And that kmod-cciss 3.6.26-7.el7_7 is supposed to work under CentOS 7.8.

If you have EPEL enabled, you should be able to get the srpm by running "yumdownloader --source jemalloc".

@filmtools

You can always create a free email account such as gmail and use that to register with the ELRepo's bug tracker.

Yes, 3.10.0-1127.el7.x86_64 is the 7.8 kernel.

It is possible that support for the adapter has been removed in CentOS 8. The ELRepo blog, RHEL 8.0 and support for removed adapters, will help you find that out and also a solution is provided.

Have you looked at OpenShot? They have an AppImage for linux 64-bit. This is a powerful piece of video editing software. However I have not tried it on EL8.