It was expectable, the server itself (as software) is a total failure, unstable and unreliable to even work with.
If you have something way better to work with like Tibianic server you would use it instead of trying to fix a lost dream - it's just not worth it in every aspect of this word.
Regarding Dennis - as he said himself, he didn't have much of a choice back then since Open Tibia was not worth to even work with due to all the problems it had back then (it was quite a young project) so he was actually forced to work with this failing software.