Hmm, no idea, never tried to switch servers while having this mod running. This question is more for the mod author than me. Here is home topic http://forum.worldoftanks.eu/index.php?/topic/572771-1510-session-statistics-and-battle-result-messages/
There is such option for XVM Player's Panel, if you select it you should get hp bers next to all players or under their names - depending on option. There is also Battle Observer mod that can add that too. Maybe I will add one more mod for that later, shall see.
As for the logs, read my signature.
Maybe your hardware is failing. Update your drivers, check graphics card for potential failure.
2019-06-29 18:59:37.259: INFO: [Info] FATAL ERROR: RenderSystemDeviceAccess::genericInterfaceCallFailureHandler - device in unsupported state: The device has been removed.
Blad lokalny, skasuj recznie foldery res_mods i mods, ew. rowniez wyczysc folder z plikami tymczasowymi windowsa. I najlepiej zrestartuj komputer, i ponown instalacje upewniajac sie ze odpalasz instalator z uprawnieniami admina (prawy klik na exe).
You have bunch of errors, but I dont think that all mods just crashsing like that, it seem to be a local issue, maybe asian client related, otherwise people would flood me with reports like that.