"Where is the GEDCOM I uploaded?" has been an all-too-common question here in G2G.
Hopefully, there won't be any more. Your "My WikiTree" pull-down menu now has a "GEDCOMs" link.
Here is yours.
It's the page for uploading a new GEDCOM and for viewing GEDCOMs you have uploaded in the past. You'll see the status of your file and whether your GEDCOMpare report is ready.
Onward and upward,