Simplify Manager

[Patch]

Two things I would suggest first
Reinstall the same version of Manager and select repair as per

Manager 21.4.31 won't start

Occasionally it happens to me also. Re installing and selecting repair (no need to delete Manager) has always fixed it for me. It was happening regularly, was fixed, then occurred again recently. The last time this was happening regularly was

And make sure webview2 has been installed properly as per

Cannot create anything new or edit (Desktop version)

Previously Manager desktop on Windows used Microsoft Internet Explorer to render the user interface. The current version uses Microsoft WebView2, which uses / is part of Microsoft Edge. If you prefer to load it offline you can use