Cant open ucation extention store

[tum_mai_gu]

can't open Ucation Extention store as shown in picture.
window 11, SKU2022, ucationV.4.2.9

Still can load it from last month, but not today.
Try to clear the cache, restart window, turn off antivirus, reinstall the extension, and connect to another internet network,
but nothing fixes it.

Are the server down or something?

plz help try to validate some Fredo, or is there a way to validate without connecting to Skethucation extension

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