We have a rule that says; either enter all the results for an event or none of them. This is because, if we enter the results for just one player, that player's opponents are all going to have one match each from the whole event and that will confuse them! This causes them to ask for their own results to be added and so on until we have to enter the whole event just to not be bombarded by queries!
If you're willing to enter all the results for the whole event then we can support you. You'll need to let the players know (for GDPR reasons) and you'll need to enter all the results but at least you'll be able to add your results that way.