HTTP 500 – Internal server error

The website has an error processing the request.

Do not factory-reset a router speculatively or indiscriminately disable Wi-Fi security or a firewall. Get permission before changing someone else’s network.

Wait briefly and reload the page once.
When paying or ordering, do not send it multiple times: check order status or confirmation first.
If the error persists, contact the provider. A PC reset usually doesn't help.

Test after each step and stop when the issue is solved. Checkmarks are not permanently saved.