Very Important Pets review for InstaIndex: IndexNow & AI SEO

I had known about Indexnow for a while but hadn't gotten around to working out how to implement it. Then I found this app. It's very simple to install and use, and customer support (Raj) is very good. I am submitting a lot of URLs, but many aren't getting indexed. I know it's not InstaIndex that can influence this, but I wonder if Instaindex is all it says it is. It's early days, and I will try it for a year to see otherwise; you can submit 100 URLS manually on webmaster tools, which I think do, in fact, get indexed; however, if you have lots of product URLs, this is quite burdensome.