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Hi John, What is disapproved? The ads, or is  the site   suspended? In case of suspension Google send email why site suspended. there shouldn't be an issue with Glutamine as a food supplement. Best way to resolve your issue is call Adwords support team and ask for the reason @ https://support.google.com/merchants/answer/4581834?hl=en Thanks

Since you're doing redirects already, I'd get rid of the .html.  They're not user friendly, and you're already doing a redirect anyways so why not.  Seeing them on URLs looks old to me, most sites don't have them anymore. Trailing slashes I don't have a strong opinion on.  If these pages will never have pages after them, then I'd opt for no trailing slash, just because I think most sites do that now.