Hi Mike,
Thank you for your reply!
I’m pretty new to all of this, and my technical abilities are pretty low I’ve to say.
They did transfer my website from a .com WordPress account to a .org WordPress account (WPBeginner helped me with this). Could it be that the transfer isn’t 100% complete, and that’s why it still links to an old URL? And how can I request a change if this is the caste?
I think I’ll try the redirect plugin you recommend. I absolutely don’t want people to end up on this 404 page.