Seeing lots of issues concerning panoramas not linking together.
Google's issue tracker has this and Google knows about the problem with status set to Assigned.
In Pano2VR please check in the user data you see both Street View Uploaded and Street View Linked.
If not it could mean some panoramas have been rejected.
Also using the Street View app or your Google Maps account make sure you see the place and not "unknown".
Also, check when you log in to your Google account you select Publish and manage your 360 photos on Google Street View. By default, this is deselected.
Also, it may be wise if after 10 days you still do not see any connections and you are 100% sure the tour is built correctly try deleting the tour.
Making sure all the nodes have been deleted, keep checking back after a few minutes to see if any come back.
Once you are sure it has been deleted, then upload again.
If after a day you do not see any connections select the Upload Project to Street View button again, it will not hurt to do this a few times.
At one point we read this would only put your project to the back of a processing queue, but try it as this may have been when Street View had its migration issues a few years back.
Also from Google:
Troubleshoot Street View publishing issues
Here are a few common error messages you may encounter when you publish Street View imagery and the steps you can take to resolve them.
Publishing failed
If a publish attempt fails with no specific reason, re-submit the file. Some other publishing errors include:
Image resolution too low: The image size doesn’t meet the minimum requirements. Re-capture the image with higher resolution selected from your camera menu.
File has already been published: Make sure to delete the previous upload before you attempt to re-upload.
Invalid GPS points: GPS metadata is wrong or incomplete. Make sure you have a clear GPS signal, then re-capture your image.
Unable to process location information: Re-capture the Street View.
File is corrupt: Re-upload the file. If it doesn’t get published again, then re-capture the Street View.
Internal error: Re-upload the file.
Imagery was taken down
Imagery may be taken down if it doesn’t meet the Maps User Contributed Content Policy. Make sure your content is in line with the guidelines and re-publish the file.
Regards,