Here's my problem (if it is one). Last week, I created an account on toot.community. This week, I discovered an older account, with the same user name, on mastodon.social. Now people are following me on either/both, and I'm not sure where to post. (I'd prefer the older account, but it has fewer follows.) Can I merge/link them somehow? Other solutions?
@tim_walters yes you can migrate your account, including followers. https://docs.joinmastodon.org/user/moving/#migration
Moving or leaving accounts - Mastodon documentation

Take your information and do what you want with it.