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For important pages on your site, it's always important to look after the HTTP status codes especially when they're not in the 2XX range. What I would look at in a case like this is if indeed you're able to find some clues in other tools like Google Search Console or Bing Webmaster Tools. In addition, try mimicking the user agent of Google and figure out in your own browser what the type of response could be.

HI seoelevated thaks again for taking the time to explain. That helps a lot and will adjust the site accordingly, it makes sense.