Shortcodes plugin no longer functions

Purchased the Advanced short code plugin a couple years ago and since upgrading PHP to 8.1 the plugin no longer functions properly. Activating it causes an error, which appears to be tied to line 33 of the plugin’s “update.php” file. We’ve already reached out to Advanced File Manager via their website weeks ago and have gotten no response so far. I see this has been previously reported and “fixed” in an upcoming update but apparently not. How do I get this updated plugin?