Hi,
The most probable reason for that is the new rule which is implemented since March, 1st. For multi stages races, the list of the team members which will be used for the ranking of all the stages is frozen with the one at the middle of the first stage, so for the Nord Stream, around March, 15th. So if your team have hire new members after March, 15th, they cannot contribute to the minimum required of 10 team members for the inter-team ranking.
Not 100% sure, but that's a plausible explanation anyway.
Have a nice day
Benoit.