can't reserve and remove items

[dhnguyen]

I'm the only user working on a project in the BIM server. It has been fine lately, but today for some reason I cannot reserve items to make changes.
I have "reserved all" and it still wasn't able to select lines to delete them.
I also tried to right click to "reserve elements", but they don't get reserved. Please help, thanks.

[Laszlo Nagy]

It may be that some data got corrupted in your Teamwork file and this causes the issues you mentioned.
I would try to save the file as Solo Project (*.PLN), then reshare it as a Teamwork Project.