This happened to me when I wanted to raise the limit from 10 items per month to $100 for days I tried every couple of days to no avail and as it was christmas I just didn't worry about listing. I think I phoned ebay by going through the back door, (something selling related).  Last week I tried to request another limit raise and the same thing happened.. Then that amazing light bulb with the light appeared and I worked out that my pop up blocker/add block was on. In the end I still had to contact them to discuss my goals on here but they did raise my limit from 100 pm to 400 pm. The irony now is that I have a glitch in my listings that is blocking some buyers and make an offer which I never use is automatically ticked when I list. So I have started listing from scratch again and Im nowhere near 100 listings lol 😕