PLEASE HELP! I'm unsure if Twitter blocked my IP


When I login, I see everyone’s tweets, except 1 person I follow. She did not block me. I’m still following her, but most of her tweets either (A) appear on my timeline, then disappear if I go to another pg & return home OT (B) they never appear at all. And, I don’t think I appear in her mentions. Twitter HelpCenter only responds with automated solutions.