Even if you don’t have remote access, you should still be able to manage the router locally when you are connected to the router, either by WiFi or by wire.
Please check that the device you used to manage the router is connected to the pcWRT router. Then enter http://pcwrt/ or http://192.168.10.1 (replace that with the actual router IP address if you changed it). If you still can’t access the management page, check the IP address on the device. It should be in the same subnet as the router.