Put the summary of the bug you're having here

What I expected to happen was...:
should be able to use portals.....

What actually happened was...:
example 1-one member on the realm went through their (once functioning portal) and ended up 50k blocks away.
example 2-one member cant use portals without dying, and their stuff ends up through a completely random portal, not the one they traveled through or near.
example 3-another member went through a portal and came through underneath, took damage, and then spawned back in the correct spot.
example 4-one member went through a portal and came through, and was not near a previously used portal (image attached) 

a few other examples, but mostly, portals are NOT working.

Steps to Reproduce:
1. Walk through portal......