Website completey Broken…

Hi there

I have taken my website of maitenance and it appeared to me that something was wrong from the start at when i took it off and put it online the index page was broken and not showing any CSS
Now some product pages and shop pages are not loading properly and also on a few categories it would not let me scroll down. The text font on mobile changes on some pages and the header logo changes size when ever it wants to
I’ve attached a few videos and picture from mobile device and desktop
Please help as i really need this to work and launch asap

On pc some navs when clicked im unable to scroll down for example on Carpets, budget grass and composite decking i cant scroll down, text changes to white in some context parts

On mobile pretty much the same thing if you look at the attached video when pressed on carpet, the text font changes and i cant scroll down…

What i have tried: disabling all plugins that are not relivant to the theme didnt work
Thanks