OpenVPN router deletes randomly certificate
Hello,
I´m using OpenVPN for around a year. I created the certificates, export those and import the certificates on my phone in the OpenVPN client. After doing so the VPN connection works for a few weeks but every around 2-3 weeks the generated certificate is not working anymore and I have to redo all steps above to get it working again. It seems this issue comes from the router firmware but not 100% sure. This happens with the latest and the former firmware so it is not related to one firmware by my experience.
Is this a restriction of the implemented OpenVPN server? It would be great to have VPN connection for a longer period of time than 2 weeks.