Unavailable Missions (Tom Clancy's Ghost Recon: Breakpoint)

and despite the inaccessible missions and episodes 2 and 3 in the properties of the game, it says that I completed 100% of the story campaign

You didn't follow the story at all. You eliminated them all during the course of the campaign.
Except for Stone, who you get to in the third season.

And they are shown inaccessible due to laziness or technical limitations, the number of their missions was reduced, but they were not removed from the board.

Wolf Mercenary
and how to get into the second and third season?

dsfsdf 443
there should be a season selector on the same screen. All seasons were given to me automatically for pre-order.
And if you have a standard version without a season pass and you're in the Russian Federation, then I'm afraid that nothing.