Clients that manage themselves
Traffic allowance, end date or a clock that starts at first use, devices at once, monthly resets. Over-quota and expired clients are disconnected on their own.
Clients with traffic and time limits, subscription links, many servers from one panel. One binary, installed in a minute.
bash <(curl -fsSL https://raw.githubusercontent.com/Erfan-XRay/Ovira/main/install.sh)Debian, Ubuntu, AlmaLinux and Rocky, as root. Takes about a minute.
One command on the server. Pick the ports and HTTPS as it goes; the first password is printed at the end.
Open the panel address, look over the OpenVPN servers and add nodes whenever you like.
Set traffic and time, hand out the subscription link. The panel does the rest.