password resetting! please help!

Hi there.

I am a graduate student in charge running my labs website. Because of the nature of grad school, ownership of this website rotates every 3-5 years and information is seldom passed down between users. The last user inputted my email as the password recovery email but now she and I are both not able to log in to the account. The last user was not able to find any of the pieces of proof of ownership to aid in the recovery of logging into this website. I am not sure if I am logging in incorrectly or if there is any support you all can offer. Is this the right location to post for help or is there somewhere else I can ask for help? I am very lost!

Thank you!

The page I need help with: [log in to see the link]