1) Can you disable your child theme also?
2) Within your Theme Options => Custom CSS, I also see various CSS errors. Please remove that (save it into a .txt file, don’t loose it) and re=dave the theme options.
3) Something (not a plugin) is adding a prefix to all your JS files .pagespeed.jm.S4TTOO46U-
Locate what service you are using to add that and remove it.
Thanks,
David.