I believe overlapping dates should not be a problem, as many have submitted in the past.
But looks like updates has happened to the EE submission portal which is making porfiles ineligible.
Hi,
Even i had same issue.
Same EE profile was eligible , as soon as i updated my IELTS score, it became ineligible.
Not sure some issue with website.
Listening: 7.5
Reading: 8.5
Writing: 6.5
Speaking: 7.5