If you're looking for a service to automatically identify problems and resubmit pages for indexing, RankWeek is a good choice. It can help keep your website pages indexed by Google and improve your search engine ranking. RankWeek can automatically identify problems during Google crawls and resubmit pages for indexing. It also offers autore-submission of pages, daily sitemap monitoring and a free plan with a 7-day free trial.
Another good option is Tag Parrot, which offers automated website indexing. Tag Parrot offers bulk and auto-indexing, daily email reports on indexed pages and auto-syncing with Google Search Console. It supports a variety of platforms like Wix, Gatsby and WordPress, and has tiered pricing based on the number of sites and daily indexing quota.
If you're looking for a more general-purpose SEO service, Drafthorse could be helpful. Although its main purpose is to generate content, it also offers automatic indexing to report new or updated articles to Google for daily indexing. That can help increase your website's organic traffic and make SEO easier.