I can open it, but the moment I select use, it freezes in mid-loading and won't go anymore, and it lags up game website and seems to have frozen it, I need to close out completely and come back in to use the website.

Thanks for reporting.

Do you still have this issue? We just tested this scroll with your account and it loaded the pet selection dropdown normally. Please note that this scroll requires some time to build the pet dropdown because it checks if every has children (4-5 seconds for ~200 pets).

Sorry for the inconvenience.

Yeah it is, I tried 3 days already, in intervals, it just looks as if it's started loading when I click 'use' then BAM everything freezes, and I gotta completely shut out and wait, then reload BeastKeeper again, otherwise if I try going anywhere else as it loads, it won't let me, same result each time, normally when I used it before, it took as fast as 4 seconds, and when I tried recently, it took more than one and a half minutes, might be longer, but the loading bar is only a quarter loaded and it stops, and freezes right there, making it so I can't use it.

Can you please try to use it once more now? We optimized the script of pet selection there, it works much faster now.