Hi ​@Babikov Dmitrii, thanks for reporting this.

Since the issue affects only one specific board and you've already tried standard troubleshooting steps, it might be related to the board's content or a corruption error.

Please reach out to Miro Support directly and include the following:

• The board URL

• A short description of what you see (e.g. gray screen, endless loading) and a screenshot or short video

• A confirmation that you’ve tried other browsers and cleared cache

They’ll be able to take a closer look on the backend. Let us know if you need help submitting the ticket.