Dear @Support...

Dear Support is missing on the website and writes in his account that currently, technical support is not supported. Just to keep their administrators treat them with respect, to be grateful for their work, not to be rude and insulting. I'm not talking about You, and about vk 218903606, former Stormbringer, which , judging by his posts, insulted and above Support and continues to do so. One can only hope that our admin is missing temporarily.

@katerinafm, I understand that the administrator is not currently on the website. I don't understand why you write about support and respect for my report about the problem.
I don't have nothing to do with this conflict (if present) or to the user @vk218903606.

The filter started working. If there are puzzles with this filter, there are only 3 possible reasons:
1. Selected other filters, the combination of which gives a list with no results
2. Came out of account
3. Not started the puzzles.

How to determine started the puzzle or not? If I start the puzzle, and then close the tab, the puzzle is started or not? I have such puzzles not logged in started. How then to find?

Started is the one that you saved, and if you don't click "Save" then nothing will remain, and that means you never started

Thank you.