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All of my pages are "F Grade" upon last week there's no problem but now all pages are Grade F Is there any problem with crawl my page? Could you please check? Thanks

In moz crawling error this message is appears: MOST COMMON ISSUES 1Search Engine Blocked by robots.txt Error Code 612: Error response for robots.txt i asked help staff but they crawled again and nothing changed. there's only robots.XML (not TXT)  in root of my webpage it contains: User-agent: *
Allow: /
Allow: /sitemap.htm anyone please help me? thank you

I have 6 different iframe blocks (with same content in those iframes) in every page of my website. I know iframe don't be crawled by search engines but, maybe you experts give me some advice? Is that negative for SEO ?

Every page of my website has these codes, what is updowner-verification and it's content code? (I bought a HTML template from a guy) <title>Title is here..</title>

Keyword is "iPhone Service" , URL is youtube.com/iPhoneServiceJoo , meta is revenant again contains "iPhone Service" PA: 33
DA:96 this is youtube channel. This page is on second page of google, (24th) Why other PA and DA lower pages/sites are showing first? (my competitors) So this is not about PA & DA right?

i need to put static text (about our company brief 600 words) to all content section of pages of our website. I know it's bad for SEO Duplicate Content. But i need to tell google this is my static content and do NOT crawl it. Or something like that. canonical is for whole page but i need to set it up for certain positions of every page. is that possible?