Assuming your boxes are being run on SquashLevels (always worth a check!) then it's likely that it's because SquashLevels doesn't think you are the player in the boxes - and therefore assumes you are a guest user with no access to contact details or adding results.
The most common reason this happens if because you have registered and created a new player profile rather than selecting your current player profile (i.e. the one in the boxes). With a new player profile the system will think you are someone else.
To solve this we will need to merge your two player profiles and then your account will map to the player profile of the player in the boxes.
If you have used the same name as that already on the system then you should see a duplicate suggestion at the top of your profile. You just need to select yes and click on submit and then we will see the request. Your profiles will be merged within 24 hours.
If not (say you have have two profiles; David Hind and Dave Hind) then you can change your name to match the one on the system and *then* tell us about the duplicate... or just get in touch, let us know which are the two profiles in question and we can merge them for you.