Some fix on Prestashop 1.7 site

Hi everybody, I need to make some simple fixes on my Prestashop 1.7 site. 1) For a test I have tryied to use another theme for my site, but when I load again my theme in use, I have seen that many modification just done went lost, so I want to recover my previous version of the theme where these modifications are working. Sure the files must be in the root of the site or in the previous backup I have. Some days before to make this test, I had also created and downloaded a child theme with all the modifications I think, so that maybe must be simple to recovery all. 2) There are to fix 2 invoice id's because I have created an order for test (to check if the cart was working) and then I have deleted and now the relative id's of the invoices aren't correct. 3) Fix the Facebook like button of a plugin because it doesn't been shown. 4) Add a code of a working plugin, in the class of the products shown in the home page. 5) Fix a poup up window that have the top part hidden under the top banner of the site. 6) Fix the product reviews module of PS because when you click to let a review nothing succed. 7) Show me how to exclude "Product details" from the product page and move the "Features" function from the "Products details" section to the "Description" section. 8) Fix 2 or 3 image visualizations in the mobile version. 9) Allign to buttons, in 2 parallel banners are in the home page. Are simple things that an expert can made in one or two hour of work, so don't bid more. The freelancer chose will be also called for bid in the next things to fix.