Ah well, some things work and some things don’t.
Google has announced that it is sunsetting Review Extensions later this month and deleting entirely out of AdWords in February.
The official word is:
If you have been using Review Extensions (and not many of you have), then don’t panic, you can export your historical data out of AdWords this month. But note, you only have this month to do it, otherwise, all of your data will disappear.
The service was always a great idea but did not really translate into reality. Launched in 2013, the service caused more headaches than help. Users often complained about how difficult it was to get approved. If they could get it right, we would love to see this return.