However they can be updated pretty simply. All you need to do is add /forum/ right after that "arinafans.com" bit and they will work again.
As an example:
Old link:
https://arinafans.com/index.php?showtopic=3770#entry143059
Would change to:
https://arinafans.com/forum/index.php?showtopic=3770#entry143059