I would help, but I honestly don't have the password anymore. I don't think I signed up with an email, but if I did it was a dummy one. I wish I could help.
Edit: Also, I didn't know about this bridge for Mastodon:
if you want your Mastodon posts to also show on Bluesky then use this bridge https://fed.brid.gy/ you only need to follow the account @bsky.brid.gy@bsky.brid.gy (~~note: is this a typo?~~ It is not a typo. It will follow you back and make sure to accept the follow) and it will automatically bridge you