My premium wp theme needs to be repaired and refreshed. *experienced only

One wp domain needs to be updated and refreshed. Newspaper premium wordpress theme. -Theme needs to be updated to the latest version (without losing any edits, i cant remember i don't believe i have hard edits.) I can do this myself if really needed. -I've purchased a custom block for this theme, atm the social media buttons broke {layout, favicons/logo's are missing}. Needs to be fixed -the ajax "pagination" infinite load ,next prev and load more, are currently not working for my custom block - needs fix -need clever google add placement for this custom block, an ad after 4th, 8th, 12th post on homepage