I lost my board due to login issues

I signed in with the same account ovgeneralova@gmail.com, created a board: https://miro.com/welcomeonboard/aXZsS09TRmZGSmhrMXM2bFRlQ3oxbTYxQksyQVdKcm54dnVZcysyNE9GVUtoR1AzK29TbWRhSVhuc25HRklNejEvU2dvaStnTTN4ZlRFZ1RBWUxpMkJuRSswRk9MTm5HSmhmcHR5MjZJNHpLaVBldnpJL3hyTWd5UXhlRGI4WEdBd044SHFHaVlWYWk0d3NxeHNmeG9BPT0hdjE=?share_link_id=585442468152 and gave access to a friend as well on friday 20.06.2025. On 23.06.2025 I couldn't access the board because it was deleted by an owner and the owner is not me and not my friend. But I must be the owner and I didn't delete it. I think there was an issue with logging in because it didn't show my old boards and treated me as a new user, I didn't care about old boards so it was not a problem, but it was the same account, same email. I didn't change anything someone else did.