RBK50, wont let me reply to emails from my internet provider

No those 2 are not loaded, and as I noted when the brought out their router or modem, shoot I dont know what I am talking about anymore, i was able to respond, so if its not in the computer, and not in their router or modem, and when I hook up the orbi back, I can no lenger reply or send emails. As I noted we changed out all equipment and its not their equipment theirs works, its only when I hooked the orbi back up i could no longer send emails again.