Hello,

1) The add to cart speed depends on the server. This should be checked with default theme, without plugins and with hosting provider.

2) We don’t have guides for creating such graphics.

3) You can restore your site from the backup or if you have translation backup files then upload the .po and .mo files in wp-content/languages/loco/themes/woodmart-pt_PT.po folder or go to Loco >> Themes >> Edit the translation file >> Click on the Relocate tab >> and set the Custom option and save it: http://prntscr.com/oz42ws All your translations would be back.

4) To fix the emoji you can check the below article:
https://docs.presscustomizr.com/article/233-social-icons-showing-up-as-squares

Or to disable the emojis from your site you can check out the below url:
https://kinsta.com/knowledgebase/disable-emojis-wordpress/

5) You can disable these custom post types from Theme Settings easily. Please use the search option in the Theme Settings http://prnt.sc/p1lwm9 and find these three options and disable the post types
https://gyazo.com/860a8e1821fdd0491aa15e327ccc4f32
https://gyazo.com/4a391d3b7b046e42b625ed07698b35f6
https://gyazo.com/900df5c442aac99e83ff8f86666702e1

6) To set a gap between ADD A REVIEW and pagination use the below css in “Custom CSS for mobile landscape” and “Custom CSS for mobile” from Theme Settings >> Custom Css:

.comment-reply-title{
margin-top:20px;
}

Screenshot: https://jmp.sh/s01S6Dk

For the description issue, please send me the WP admin login details of site so I will check the issue why the description removed on the second page of review.

7) No, you can not use ajax pagination for Woocommerce Reviews.

Best Regards.