I Receive “Vault-Tec Engineers Are Hard At Work Getting Our Servers Back Online! (NoRegionPing)” When Starting Fallout 76

I don’t play this game regularly but I do play it when I have nothing to do. The game works perfectly OK the first time I install it. But one or two days ago I started receiving “Vault-Tec engineers are hard at work getting our servers back online! (NoRegionPing)” whenever I start the game and I can’t play it anymore.

If you have any idea how to fix this, please help.
