We first selected every check box to create all the convination variants, we see a message that the request is been taken and cueued but even waiting long time the new items are not created.
After that we try to do the same but with only one variant and same thing hapens.
No error o exception is rised, but the feeling is that the database is not taking the queries.
Have you tried with a different browser? It’s a simple, stupid solution but I had a problem of not getting upload images and upload csv commands through and then finally after hours got an idea to test another browser and that worked.