I do not know the reasons, but it is curious, because if you follow Nina's instagram, you can see that Theodora-Matthew, Philippos-Nina are spending a few days in Morocco, and two months ago, they were in Mozambique, in the hotel complex of Nina. I think , they have free time, the reason why they have not married yet, and obviously it is not for work reasons, and not because of the pandemic....My opinion, the reason why that they have not yet married would be reasons external to them, related to other people... It cannot be excluded the state of health of King Constantine , they might want to wait for Constantine to improve his health after the problems he had in December and January