Hello, Elena. You have a "plain fancy sig" error in your sig for this account. There's more information at New requirements for user signatures/Help. Would please you be very kind and help me "QA" the instructions, by seeing whether you can fix this error from the directions on that page, and then ping me to let me know how it went? (I've just started writing the page, but I've got the instructions for this error on the page now.)
Custom sig error
Thank you, @Whatamidoing (WMF)! Better to answer later than never:)
I checked my signature and corrected it. Also I checked the default state for new accounts, and it doesn't include any checkboxes, so new users won't be confused.
I reviewed New requirements for user signatures/Help - seems to be quite clear in explaining the steps.
Thanks! I really appreciate it. This project is still unfinished.