No more access to crypted files on icloud (Mac OS Big Sur) after restoration of erased folder

I have erased an important folder of my cryptomator volume which contains many others and is saved on Mac OS ICloud.
I have restored the erased folder in
When I have launched cryptomator after restoration, there is no more any folder or file visible in the volume.
The volume icon on desktop indicates 779,23 Go free,
and Cmd I indicates capacity 779,23 Go and 469,05 Go on disk, 310,09 available.
Can somebody help.
I apologize for my english.