I am a new SharePoint site administrator, and the previous administrator has given me "Full Control" access over the site collection. Unfortunately, there are multiple folders within sub-sites that I am unable to access. Does anyone know how I can grant myself access to these folders within the sub-sites? I have tried requesting access once I come across a folder or sub-site that I do not have access to, but when I go to the Access Requests page and click "Approve" on my access request no action is completed, and the request remains. Subsequently I am still able to approve and decline requests from other users.
If anyone has some insight into what the issue may be that I am facing please let me know, or if there are resources you can point me towards I would greatly appreciate it!