Hello,
Thank you for your review,
This can 100% be solved for you, as we have a seal to create a leak proof potty it means sometimes it can cause a vacuum within the potty.
We have a video under our help centre of our website which will direct you with how to open this.
https://www.mycarrypotty.com/pages/help-centre?hcUrl=%2Fen-US%2Fhelp-i-cant-open-my-potty-1005975
Please follow this and your potty will be open and ready to use.
Please do email us at customerservices@mycarrypotty.co.uk if you need any more support.
Thank you
“We are so impressed with My Carry Potty. It is so easy to take out and about, and our Son finds it really comfortable to use. He also loves the design which makes it so much more fun!”