Right, clearing cache and cookies resolved the problem for me, also on my public library account. Odd enough though, as the issue seems to have affected quite a couple of users at the same time. Maybe you'll have a chance to report this to Oxford? - Issue resolved.

@Samwalton9-WMF The issue persists for me, and a similar issue with ODNB has just been reported on https://en.wikipedia.org/wiki/Wikipedia:WikiProject_Resource_Exchange/Resource_Request#Oxford_Dictionary_of_National_Biography_entry_on_Charles_Darling,_1st_Baron_Darling . On the other hand, I am getting the very same "page not found" error when accessing Oxford pages via a public library access that I have. Therefore it seems to be some intermittant issue with Oxford Databases, but unrelated to TWL. @Usernameunique FYI

As a matter of fact, it is essential to regain the "lost" accesses from ProQuest Central in the first place. Gaining additional access to other sources like ProQuest Digital Collections would be nice to have, but secondary.

Since a couple of days, saving any article that calls the score extension leads to the score becoming invisible (without having the score itself changed). So the workaround of reading pre-rendered files from the cache seems no longer to be working. It is really annoying that the problem is still not solved after such a long time of waiting. There are currently 1,241 pages calling score on en:wikipedia, 748 on de:wikipedia which are endangered of losing the proper display of the contained scores.