so i posted a quest 2 days ago about that i cannot get on my own server i now founded the problem! It happends when i connect to my Iphones "HotSpot" (wifi/internet) thats why it wont log in... my question about that is WHY! why cant i join my server while using my iphone as internet.
It might have to do with the NAT settings.
Here is a link with some information which might help you understand the topic. (found it via google)
I'm not saying you have to install any software listed on the linked page, just read it and google for more infos about your exact setup.