It may have nothing to do with the speed of their shipping. Observe the holidays listed in this LINK
Also keep in mind that there are local but severe lockdowns going on this very moment. Last but no least: T&T is very poor lately. Not only from China.
I usually receive orders from Vapcell from between 10 to 21 days after placing order.
There might be shipping issues at present due to COVID.
In your order via AliExpress, if you look at the order details you should most likely see something like a notification box with the text "Seller's Shipping Method" followed by a tracking number beneath the text. Enter this tracking number into a parcel tracking website, preferably at https://parcelsapp.com/en, and or at https://www.17track.net/en.
Please note that tracking information may not be immediately available due to the use of (apparently) non-standard shipping method by Vapcell. But tracking information will (or should) eventually become available once the parcel has reached the destination country.
If you are really concerned about the shipping status of your order and tracking websites do not currently have tracking information available, then contact Vapcell directly via AE messaging. Vapcell should be able to advise the shipping status of your order.
Remember Oct. 1 to 7 is China National Day. Millions of people leave a week earlier to catch train, plane rides to hometown, virtually China is at a standstill for at least 15 days.
Aliexpress is just acting up a bit, I think. That link for Vapcell works fine for me. But I used to be able to access the Convoy and Sofirn stores by just typing convoy.aliexpress.com or sofirn.aliexpress.com, but now I just get a “this page doesn’t exist” error. I have to include the store number for it to work.