I avoid aliexpress whenever I can, they've been TERRIBLE at delivery of most stuff I've ordered from them. Sellers either never communicate, or bend over backwards to do the minimum to prevent you from requesting refund (I had a order of receivers from them that took 3 months to arrive once.)
Every time I've requested a refund after the expired time, the item never did end up arriving. if they're that delayed typically it means they got lost in transit or fell off a boat somewhere. I got to think they use the worst options for getting things imported (throw it in a shipping container with bulk packages so it is sorted slowly and low-priority) most of what I ordered arrived smooshed, beaten, battered, and oddly enough.. seriously taped up (probably to protect from water damage?)
Either way, there's a good chance if you request the refund the item may never arrive if it's already that late... but if it does.. Aliexpress as a site often does honor their refund policy... the seller may request a extention on shipping however which will delay the process.
Good luck either way! sorry to hear!