I can’t even figure out how to work with images with Sharpening, or Silve Efex… And stuff like that. There are no buttons, tabs to display in those tools
There’s no phone support, however, there’s the forum and tech support here: https://support.dxo.com/hc/en-us
Here’s Ed’s table of contents, he did a good work and you’ll find good info.
Have a look at this section of the forum about NIK:
This is a newly created section to help everybody over time.
Also have a look on youtube or here for some tutorials: