Hello,
I noticed a gradual rankings drop for 3 important keywords over the last month, with a pretty big plummet the last two weeks. Overall in the last month+ we dropped from position 9 to 41.I noticed this when I dug further after noticing traffic dropping since February (not a drastic traffic drop). I should note that the keywords took people to my client's homepage. Their branded keywords have no suffered and I looked at a couple others that haven't either.
Now, there is a link in the site footer (we have site wide header and footer) that takes you to a static page that contains links for the 2 digital flipbook catalogs the customer has (one for US and one for Canada).
My concern is that at the end of January I had a developer implement a noindex/nofollow meta robot & robots.txt disallow specifically on the HTML pages/URL of the Canadian catalog ONLY. It specifically pointed to that flipbook URL. This catalog is nearly identical to the US catalog and I thought I'd be eliminating duplicate content and helping with crawl budget. After looking further into it last week (reading up about internal nofollows not necessarily being detrimental, but not recommended) and noticing the drop in search visibility traffic (starting gradually in March), I had the disallow/nofollow removed. This was last week, and over this last week the traffic took an even bigger drop (not amazingly drastic but enough to be concerned) and I noticed the keywords that we did ok for dropped even more this last week (down to 41).
I'm concerned this has to do with the change I made at the end of January and reversed back. I should note that I don't think these catalogs or the static page that links to them brought any traffic. The keywords I am concerned about fell on our homepage (where the link to the static page that contains the links to both catalogs is in the sitewide footer)
The catalogs are a couple hundred pages. I honestly don't see how this could do it, unless it has something to do with the footer being sitewide? There have been site upgrades/dev changes over the last couple months too (although I am not sure if that affected other clients who received the same upgrade), so this is hard to pinpoint. Sorry this is so long but I'd appreciate someone offering some insight to help ease my mind a bit!