Welcome! This forum has a treasure trove of great info – Scouters helping Scouters! Just a heads up, though - all content, information, and opinions shared on this forum are those of the author, not the BSA.
Your Tiger Den Leader (BSA member number 14431111) is missing the Den Admin role in Scoutbook. As a Pack Admin, you should be able to add the Den Admin role to this adult leader.
After that is fixed, I would recommend having the Tiger Den Leader go to each Scout’s Advancement page in Scoutbook, go to Tiger, and make sure that the rank is set to the most current version year.
@HassanAli It looks like you are registered as Cubmaster, which means that you are already a member of the pack’s Key 3 (Cubmaster, Committee Chair, and Chartered Org. Rep.) You do not need to be a Key 3 Delegate, because you already have Key 3 permissions.
Would it be OK with you if I temporarily add myself as a Pack Admin in your pack to take a look?