Facing poblems, I guess with Phlox olivetreehill.com/contact-us

Hi,
not sure if this is the right place for this post but I couldn’t find any other.
If it is wrong please provide a link where I can forward my request.

I’m experiencing some problems with my site which was developed on WordPress and uses the Phlox and Elementor theme.

I tried contacting Elementor and they say it’s a theme issue.
In particular:
while using Firefox, we found the absence of images on some pages of our website olivetreehill.com
Please check: olivetreehill.com/contact-us.

By deactivating the Phlox and activating the Twenty twenty four WordPress theme, the images are visible.

On chrome, instead, while we do not encounter this problem, we verify the impossibility to select the items in the drop-down menu.

Thank you for helping.
Ciao, Ivano

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