Divi visual bugs (form, footer, margins…) Help!

Hello guys! (Bug report: GRMYPOEK)
I had today some visuals problems since I actived LS preset (LS plugin activated and LSWS) to win better score on PageSpeed / Pingdom for my customer.

-Before, theres no visual problem in Divi builder inside wordpress admin-

1- the Divi contact form changed its appearance (I lose color, glass effect, fonts police and size, fields to be filled in move inside the box, and each text fields are duplicated outside ?)(Not in DIvi, only on website)

2- the visual of footer lose all background color and shape (but not in Divi builder)

3- Some spaces (Margin) change inside the page, not aligned, or avatar photos from customers don’t be centered (but all options in Divi is OK – I verified everything)

I read some people who have problem with LS and Divi, apparently me too. The problems arrived after I check “Advanced Presets”, I hope someone could help me to restore the good appearance.
(Like I said, I verify every space, numbers, marge / margin…in Divi and its ok, but on live its WT$@ ). `:-)

Thank you! ??

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