Ah, so you installed ibProArcade again ?
...and just doubled your request in the mainthread and here :down:
...and did not use the search-function first
https://vborg.vbsupport.ru/showthread.php?t=178198
but you need to synchronize everything to "latin1_german2_ci"
just to mention that this is caused by some charset-problems of your database, not ibProArcade
see this for example:
http://www.vbulletin-germany.org/showthread.php?t=3621