Device paused. Slow Internet connection

A couple weeks ago, our Internet stopped working. A tech came out, gave us a new gateway and changed the location it was connected at because apparently it was connected wrong (we'd had no issues for years till this one time). Since the change, our Internet connection has been miserably slow and I always get prompted to sign into the network. Whenever I do, it says my device is paused but the app says otherwise. I'm seriously switching to another service provider because it is interrupting my work. Why am I paying for a service I can't use.