Shop Through Chase is operated by Catera Commerce which is owned by Rakuten, and they have some financial challenges:
https://www.japantimes.co.jp/busines.../rakuten-loss/
If it has been at least 60 days since the purchase, I would contact Chase customer service, in writing, using the SM system and provide the required information:
What if it's been more than 60 days since I made a purchase and my bonus points still haven't posted to my account?
Contact us with the following information: the date of transaction, items ordered, store name, order number, and amount of your purchase (before taxes and shipping).
NOTE: We can only research orders that were made within the past 180 days. Merchants will not address order inquiries that are older than 6 months or 180 days.