There's your robots file, I can't see any marketo landing pages anywhere, so i can't see if you're blocking them from being crawled cause I don't know what your CNAME is.
> I don't understand this part but I'm going to check with our webmaster
As Elliot says, in the Marketo header section, you need to have index set, if noindex is set it won't be crawled.
> I have following, is that ok?
we also have following code on our template, can this impact the organic search?<!-- Google Tag Manager -->
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