Hi there,
My husband has the similar timeline to your PR renewal and Citizenship application so just wanted to share his case.
He applied the citizenship via online last October, and at the same time, he applied for his PR card renewal as his PR card is about to expire in the early 2024.
He applied for PR card via paper in the middle of November, received AOR in the middle of December. It took almost a month for him to receive his AOR.
Considering you applied for your PR card renewal in the last month, (and also considering nowadays the process seems being slower down over Christmas /New Years holiday time). I assume that they received your application (as the agent confirmed it) but yet has begun processing your application. Usually, once they start processing the application, it won't take much time to complete it. (It took about a month for my husband to receive his AOR but then it only took about 5 days for him to see on the tracker the completion of his application which says IRCC sent out his new PR card)
I believe your AOR should be on the way, and your PR renewal will be processed soon as well, especially when the agent already confirmed they received your application.
Nothing to worry unless the processing time is extremely being delayed and you have any plan to travel out of Canada soon. Wish you the best!