Hi Dorothy. Welcome to WikiTree! Thank you for upgrading to Family membership.
Erickson-4555 is the "WikiTree ID" of a profile you did create, for Syd Erickson at this link:
https://www.wikitree.com/wiki/Erickson-4555
You should have access to this profile.
However, to carry out certain other operations, including perhaps creating further profiles, you may need to make a further membership upgrade, to Wiki Genealogist level. To do this, sign the WikiTree Honor Code. For more details, see
https://www.wikitree.com/wiki/Help:Membership#Wiki_Genealogists
If the problem persists after that, please come back to your question on its G2G web page and add a comment with more detail.