I play 10 tables (irrelevant information but to I want to express my frustration).
Betfair (ipoker)
Windows 10 home 64
HEM3 version 3.1.10.0
I have configured client according to your instructions (auto center my seat).
In site settings I have selected option 'auto center' in my seat options.
HUD stats are displayed for wrong players but obeying layout I have saved.
Sometimes HUDs are positioned correctly but I think that depends on seat I take.