Hello @KathyVanDriel ,
If the system isn't recognizing the username you're providing, then I'd recommend going through the Forgot Username process so you can recover what the system has for your username.
Support Tips
"There's a multitude of ways to engage your audience through us using your social platforms - via ads, social post metrics, email links, and more! " - Will
See ArticleSupport Tips
"Target your most engaged contacts by creating a segment. Create a special offer or show your appreciation!" - Caitlin
See ArticleSupport Tips
"Greet new contacts with one or more automated Welcome Emails depending on their interests or your business goals." - Nick
See Article