@kamoj: Thanks for your reply. In the meantime I've found the solution for the login poup error on the openvpn setting page: a password change for the web interface. After changing the password, the opevpn and the routerinfo pages work without problem.
For the checkboxes on the addon_setting...
Super firmware, thank you very much Voxel for your hard work. It's great to see a similiar development for Netgear Routers as with ASUS routers (merlinwrt).
Thanks a lot for your hard work kamoj. Since Christmas I've got a new R7800 and I am already using your add-on with voxels firmware (which is brilliant too).
Unfortunately, not all of the functions of V5 of your add-on works on the R7800 (with V1.0.2.73SF from Voxel).
The links to the hidden...