Hi everyone,
I have recently been trying to fix some MP issues just to find out that the version of Unreal 4.20 is the culprit. It seems that this version has some networking bugs that have been corrected on V4.21 of the engine. I will need a few days to upgrade to that engine version to fix most of the MP bugs reported.
If you are experiencing multiplayer issues, please bear with me a few more days and I will have this all fixed up ASAP.
Thank you for all your patience while I fix these remaining bugs.