Hello again,
Thanks for your help and response.
I have tried with the (non-admin) test account of which I had given you the login details, and with that one it all works now.
On the other hand, with another account of mine, which is on the same plan, _none_ of those links are working now. That's strange. I tried both accounts with Chrome in incognito mode (and closed it off completely before reopening chrome in incognito and try with the other account, tried back and forth a couple times that way). Do I need to delete the htaccess files in those folders first?