Hello,
1) On what page your font does not load? Because I don’t see any error in the console https://prnt.sc/26jmhx8
2) Add the Product categories widget to Shop sidebar and change the title according to your needs https://prnt.sc/26jmi8m
3) I see that you use third-party plugin for the shadow effect Shadows for Visual Composer plugin. It plugin does not call the styles on the shop page. So, contact plugin author to find out why.
4) Because the height of the image of one of your products is smaller than all the other https://prnt.sc/26jmno2 Use images with the same height while uploading that for your products in other cases grid won’t be aligned.
Regards