Post your robots.txt and exact URLs you're getting errors for in your Search Console. Can't really tell without knowing your robots file.

So, how about now? Do you have any stats? Would be interesting to see how it affected your site rankings, but my guess is, that few hours outage doesn't have too much imp...

It's keyword stuffing - make sure to get rid of that shit. @Sophia - nice forums ;)

I don't see any changes yet. The numbers are about the same, including CTR. Maybe it needs some more time.

That will surely get penalized as it is nothing but keyword stuffing one time in the url is enough and using it more than once doesnt have any extra effect

There is no point to implement such a redundant URL structure. It's over-optimization, and it could be bad for your site, even though this isn't ordinary keyword stuffing...

Do your site contain sitemap.xml? Are these pages really unique? How long it's been since you added them? There are few reasons for pages not being indexed, we'd need to...

You don't really need the 303 redirect. 303 - See other (from RFC 7231) The 303 (See Other) status code indicates that the server is redirecting the user agent to a diff...

I don't think it's so easy actually. You'd want to keep track of www.example.com even if you don't use it. At least for the data provided - backlinks etc. You can't see t...

It depends... Is your website entirely on https? Then use https. Do you use www? Then use www.