Same problem not resolved 3 times

I have been having a recurring issue since Friday (7 Feb 2025). It started with coming home from work and my wifi asking me to sign-in then taking me to a guest account. I WhatsApp Afrihost, all seems sorted until everytime I connect a device to my wifi, it asks me to sign into the wifi and activate it. Come Saturday and Sunday, only my phone can connect to the wifi, my TV and 2 other laptops say they are connected without internet or they just get dropped. Sunday, WhatsApp afrihost again and that was a painful procedure because according to them I'm connecting but why is only 1 out of 5 possible devices connecting with internet? Again seems like a fix occurs and then my tv starts dropping the internet/can't connect, my laptop cannot connect. It works if I hotspot the signal from my phone that is connected but why do I have to do this everytime. Sent an email last night (10 Feb 2025) to the 'abuse' email address and the suggesting was rebooting the ONT and router, tried that and it worked for about 5 mins before the same problem starts up again. I work from home and cannot deal with this all the time. I'm not paying for this ******* either.