@Rajneesh_Gautam_  Thank you for confirming so promptly. Further troubleshooting revealed the promoted entities had expired but were still present in the catalog (a known issue in the FAQ). Updating these entities resolved the issue.

Chiming in here.. it appears that front and back promotion functionality has been affected recently, i.e., in the Dec. 2023 timeframe. Front promotions no longer show and activity edits to both front and back promotions don't take effect (observed on at.js 2.4.0). Note that promotions are present in...

Yes, one can display multiple Recommendations Criteria simultaneously via concurrent JSON rawbox calls, as detailed here.