For OP. IF saudi authorites found out you are Ahmadi, would
they stop you from hajj or Umrah? IIRC, Ahmadi/Mirzaai's are also considered non muslims by Saudi Arabia.
The Ahmadi jamat leader claimed he is Mahdi, then he claimed he is incarnation of Jesus (PBUH) and ultimately he claimed a prophethood. Pray tell us, as per Quran and Hadith, claiming prophethood after prophet Mohammad (PBUH) will make you muslim or what? And the people who follow the believes of such so called Prophet would be considered muslim or not?
Taking cue from history, Why First caliph of Muslims Hazrat Abu Bakr (R.A) fought against such false prophets? instead of tolerating them?
Jesus would come at end of times to fight Dajjal along side Mahdi and worldwide peace would be establish after their arrival. This is what Quran and Hadith tells us. If a person claiming Jesus and still world is in chaos. I can only sigh at his claim