Gints

So, I just installed completely new WordPress and installed only two plugins Yoast SEO and NextGEN Gallery. Everything is the latest version.

Answers:
1. Make sure the issue doesn’t persist when Yoast SEO is disabled.
If the Yoast SEO is disabled there don’t have any robots tags as well. But it’s because Yoast SEO is disabled which should do the task.

2. Check for conflicts.
I installed the Health Check. The check doesn’t make sense because I have installed only two additional plugins and WordPress default theme. The only two plugins what I can disable for Health Check are Yoast SEO and NextGEN Gallery.

3. Check for JavaScript errors with your console.
There don’t have any JS errors.

At the moment NextGENN Support team didn’t answer my message on their support board. No answer yet.

Here is my test page: https://wptest.musicpm.lv/ngg_tag/test-tag/
Using:
WordPress 4.9.4
Twenty Seventeen 1.4
Yoast SEO 7.1.0
NextGEN Gallery 2.2.54

Configuration:
Added test gallery in NextGEN Gallery with one tag: test-tag.
The only settings what I changed in Yoast SEO are: “Picture tag (ngg_tag)” -> “Show Picture tag in search results?” set to NO

For security, I added X-Robots tag from server side sitewide. But this shouldn’t impact the issues.

Should I upload this on GitHub or this description will get sent to developers?

Thanks!

Update:
The same issues are with Yoast SEO 7.1.0 version.

Thank you for your response!

The only thing that I checked, there is no JS errors. I can’t do full check at this stage. I have access only to the live version and there are quite a big peaks in traffic.

I posted the issue in NextGen Gallery support threads as well.

Thanks,
Gints.

Thank you for your detailed answer on this! I will get used to new interface and will be fine soon. Will inform Next Gen Gallery support team as well on this as the issue could be on their side as well.

Keep good work.

Update:
The same issue with latest Yost SEO 7.1.0 version. All the same issues with 3 different websites. Please find the way to add Robots NOINDEX tag on these NGG_Tag pages.

Thanks!

Thanks, Pim!

I had a similar problem with a timeout. Your recommendation worked perfectly for me. Probably I had just slow and bad my office internet connection. Uploading wpress files through FTP was more stable.