EasyJet already checked in. Can I add cabin baggage now?

[Chippy1234]

Could anyone advise. Can I add a cabin bag after check in. Flight isn’t for a few weeks. Am going around in circles with EasyJet website! It only allows me to book a hold bag now.

Is it possible? Has anyone got an EasyJet email address?

Also is Duty Free purchases included in small cabin bag allowance?

I just flew with easyjet didn't realise bag was too big so had to pay £40 to put it in the hold which I think was cheaper than buying it before? Carrier bags with duty free didn't count. We all had one each and were fine