The assistant moved from редиректо.ru/seo to unoapi.ru/seo. Accounts, chats and projects came along — anonymous chats did not.
Seyka moved to a new address: unoapi.ru/seo instead of редиректо.ru/seo. The assistant itself did not change — same chats, projects, tools and result cards. The address, the styling and the navigation did.
Accounts and all saved conversations moved with the product: sign in the way you did before and your chats and projects are where you left them.
Chats held without an account did not survive the move — they were tied to an anonymous session on the old domain. If you used the assistant without signing in, that conversation cannot be recovered.
The old address did not leave a redirect behind, so bookmarks to редиректо.ru/seo need updating by hand.