The bug which has been preventing readers from renewing their books online via SOLO has now been fixed. If you see the 'renew failed' message from now on, it means that there's a genuine, library-specific reason why you can't renew, eg, limits on number of renewals, restrictions on renewing overdue books.
Fixes are still being worked on for the various other bugs, and we'll update as and when things get sorted out. Don't forget, if you are experiencing problems with SOLO, please report them either to us or use the feedback link on SOLO itself. If you need guidance on how to do things in SOLO, again feel free to ask us or take a look at the online guide.