Not possible to share image from old to new sites

We use theme 2014 and we have a multisite network with 5 sites. 3 of them are recently created.
I have installed Network Shared Image plugin and it works fine between the 3 new sites, and from the new sites to the old sites. But when I try get access to the images on the two old sites, I get them as option in the drop down menu, click on the wanted site and the gallery appears, but the images dont open up.
It’s neither possible to share pics between teh two old sites.
When I check the url link on the images on the different sites (old and new) I see this difference:

URL on an image on one of the new sites seen from one of the old sites, and this can be shared: es.alexanderrybaknews.com/wp-content/blogs.dir/5/files/2014/12/incotwitter.png

URL on an image on one of the old sites seen from a new site. This image is not possible to share and it doesnt open up: https://www.alexanderrybaknews.com/wp-content/uploads/2015/01/фсс-150×150.jpg

it should have been: https://ru.alexanderrybaknews.com/wp-content/uploads/2015/01/фсс-150×150.jpg

Any idea what can cause this problem?

Thanks in advance ??

Kari L

https://www.ads-software.com/plugins/network-shared-media/