Create a shortcut for chrome ---> and edit it e.g. "C:\Program Files\Google\Chrome\Application" --enable-features=AllowLegacyMV2Extensions --disable-features=ExtensionManifestV2Disabled,ExtensionManifestV2Unsupported
then you can download the extension again directly from the store
Chrome Web Store, if there is still problems use the
manual-install crx