Using the previous version I was able to paste a solved link from astrobin into SGP and click check and it worked, setting the coords for the target. I have 2.5.2.8 installed and it is not accepting any astrobin links or DSO browser links. Yet they are solved links.
Reporting back on this. Updated to latest version. Still had the problem. Then discovered the firewall was blocking the outgoing for checking the plate solve url. Whitelisted it and this is now working fine.