App Inventor 2 Ultimate ( AI2U ) does not open projects

Hello,
I cannot open the application that I developed with MIT App Inventor offline in windows with AI2U_4.6 . gives a version error.

The version of the application I designed online appears to be 213.
( {"authURL":["ai2.appinventor.mit.edu"],"YaVersion":"213" )

In the application I made with AI2U offline, the version appears as 167.
({"authURL":["localhost"],"YaVersion":"167" )

When I correct the versions on all pages and open them again, the blocks are broken.
Will there be a new version of the MIT App for Windows? or How can we open Apps offline?

AI2U appears no longer to be in development.

and

Search results for 'AI2U' - MIT App Inventor Community is all the App Inventor 2 Community knows.

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