Are you past the initial delivery estimate they send? The won't do much I'd imagine if you're still in the original estimate window.
I wouldn't be surprised if you got the tracking soon, but if you are past the window I'd just email them. Customs is probably slow right now with everything going on. Mine took a while too. Ordered on april 4 (got the shipping to depot that same day), estimated delivery of 17th to 24th, so 13 to 20 days later, and they actually showed up on the 28th. (so 24 days after I ordered, 17 business days after I got the "shipping to depot" email). Yours took a bit longer to initially ship, so it's been about 15 biz days since they shipped it. I was actually going to email at that point too, but monday morning before I could, I got the tracking number.