Image Gallery Stopped Working (Brute Force Attack?)

Hello,

I just upgraded to 3.5.1 per my internet hosting provider’s suggestion but that doesn’t seem to fix the issue…she said they’ve had a lot of “Brute Force Attacks” lately but I haven’t found any solutions in any searches thus far.

Here’s the issue:
1.) Click on any of my real estate properties: https://heidiattheshoreline.com/
2.) Try to either arrow through or click any of the other photos in the gallery.

Basically the photos that used to automatically scroll through now don’t even work when I click the thumbnails.

Are there any plugins out there I can install or something I can do to fix this? Unfortunitely I am a designer not a developer so if there is a techie out there that can help I will pay you to help!!!

Thanks,
Corinne