ZeroTier and OpenVPN - external access

I have a Linux Enigma2 satellite tv box that is now running OpenVPN to hide ip due to geo restritions and I can have internal access to the box software within my house network.

Normally i use ZeroTier to have external access to the box software from any place outside my house…but with OpenVPN running on the box, I can not have access to it by ZeroTier.

Is there something I can do on ZeroTier or OpenVPN configuration to again get external access to the box?

Thanks, and sorry for my english as it is not my native language