ADP Purchase

I recently bought an Ideapad Slim 5 (14AKP10) from an offline store but did not get the extended warranty. I got to know about the ADP extention offer few days back and tried to check for it on the BuyALenovo website. I was getting an error that "MTM does not have any offer".

It's been only 27 days since purchase, is there any way to avail the offer, I have seen many posts saying the deadline is for 30 days?