All of my apple devices no longer log onto my home wifi. The pages Captive. Apple.com comes up . Please advice se

If none of your devices are able to access your home Wi-Fi, it sounds like that Wi-Fi is not functioning. I would first connect directly to the modem via Ethernet access and confirm that is working. If so, then, turn the modem off and then back on to reset it and see if that works. If not, have the modem repaired or replaced.