I've tried those people, and I did the doors I was supposed to do on the guild quest -well, the first one. I had only one level. The three others in the same room were left unopened, and I reached another level of lockpick. (Would have been higher, had I not clicked the wrong speak option when gaining membership.)
This game was started without patch.
I'll look at lost items recovery. (And keep checking the merchants).
Thanks for the help!
