OnenCart Fixes 3.0.1- experienced coder only...

OpenCart 3.1.0 - we searching for someone who is truly experienced in OpenCart, coder, PHP expert..... 1. UNBLOCK IMAGES FROM THE [login to view URL] - SOMEHOW IMAGES ARE NOT INDEXING AS OF NOW on every search engine. We had SEO guy blocking them in a code (we have no clue why he did that ) htaccess, [login to view URL], header or home page (we have no clue why) and they are not indexing like they always did....We have a SEO Pack that create good sitemap and it works but robots we think or some command in a opencart code blocking them somehow? 2. REMOVE SITE REDIRECT (old domain to new one) we do not need that anymore - we kept that for a year now so google should know we not using it anymore. 3. CAPTCHA IMAGE ALT REMOVE OR ADD IMAGE ALT ON OUR BLOG PAGE- (whatever is easier) Add image ALT to blog pages since they showing an error or remove completely captcha option as it shows as an error. Whatever is easier. We try to block that but no success. 4. REMOVE AND DELETE 28,000 OLD DEAD 404 PAGES FROM THE SITE. They have to be removed from database completely so they do not log anymore in and they are gone for good. They affecting our SEO ranking since there is so many of them. WE DO NOT WANT TO REDIRECT THEM SINCE THEY ARE LIKE 12 YEARS OLD we want DELETE THEM ALL. --------------------------------------------------------------------------------------------------------------------------------------------- Explanation for removal of 28,000 of 404 pages We have over 28,000 pages with dead 404 pages that drag behind that OpenCart site for over many years. We see those 404 pages in SEO Pack we have they are easily found...cashe pages, old pages, links, crap we no longer use. WE DO NOT WANT TO REDIRECT THEM WE WANT TO DELETE THEM FOR GOOD. a. I know that every site has 404 pages - and we have SEO Pack 404 Page ON. I know that as long as this page is there we are ok for now. b. I know that it matters when 404 pages from our site are attached to other sites, referrals - and that creates bad experience for the user and we are penalized for it in SEO. This is the problem here...... c. Our site lists on average on google on 43 place when clients search for products, concepts etc. This is horrible - and I sure that this is due to too many 404 pages. d. We done literally everything to that site, pages described, unique good content, speed is there, SEO Pack is there. So the only thing could be those 404 pages. So we need someone to either remove the database, clean it out of 404 pages and put that back in or some other efficient way....not sure if that is the way to go, but we want them all deleted so they never show up again....... e. Maybe there is a OpenCart extension that you can install and suggest and will clean those 404 pages now and in the future. If there is automatic way to do it - even better. We have about 2000 site pages in our sitemap now, plus 28,000 are old 404 pages that we want to delete and no longer use, delete or want to re-route them. We need solution for this urgently.