That’s just a wonky moulding - it’d drive me crazy too - but the best thing you can do is speak to support - they’ll send you new replacement caps - it’s a doddle to sort yourself
Yeah - it’s annoying, but it’s not worth the hassle of going anywhere or sending anything anywhere, let alone the pointless airmiles etc
It works perfectly - just get them to send you some replacement tops - this happened regularly when DT’s were shipping with the wrong caps
Support will sort you out, no quibbles, you’ll get them soon as and instructions too