Thank you for the explanation below, however, there still seems to be a problem;
I have checked all 223 entries for confirm or reject, so my front page looks like this:
I have unchecked the first entry and would expect to see a button saying send to Wikitree, either individually or as a wholesale group. There appears to be no button.
I have also a screenshot of the last page:
This appears also not to be the correct procedure, as Upload a GEDCOM button appears to be for a GEDCOM file, not the modified Wikitree file.
Please, can you help?