Question About Link Indexed In GWT

Hi guys
hope you are doing good.
Two month back in April i send around 15 PBN links (From Market Source) to my money site. And all the URL's were indexed in Google within 2-3 days. But now it's June and i haven't seen much good rise in ranking. To check whether the links are crawled by G or not, i have verified using webmaster and in the link section it shows No Data.

What does this mean now? Links are crawled but not indexed by Google?
All the 15 URL's are index in Google. But none of them is showing in GWT even after 2 months.
Can someone please put some light on this. Just please comment it is common nowadays or just I'm the only one in such condition.
Thanks

Interesting maybe needs more time, check to see if the links are still there. The owner could have removed them. Its not really a big deal. Use ahrefs.com and see if you can see the links in the backlink explorer or something. If anything just start again and build good backlinks to the pbn links shortly after so google might seem them quite important.

Links exists. I checked and i have sean all the links are live and the Url's are still indexed. I got the report from Ahrefs Only it shows each and every link built. But again the G is not indexing the links. Hope i could get them indexed soon.
Thanks