Getting Disconnected in Mudflats since league launch

Dear GGG

Been trying 3.27 after 2 year break . Posted this issue technical forum but no answer.

I have tried with 3 toon non made pass the submerge passage that also tried with a group to skip mudflats and joined near the WP but that's it couldn't move to the ledge.

Soon as I enter mudflats and or get close to the new breach hand I get disconnected AN UNEXPECTED DISCONNECTION OCCURED and to character menu.

is this a bug of sorts ? I don't no iam not that much of an IT expert.

I did try all the solutions on forum now and past concerned with similar issues.

I can play standard with no issue, Thank you for any feedback appreciate it