Although they "appear" online, there is no real customer support.
in the best case, you can leave a message and wait for a replay a few days later.

i have used the "aliexpress database" tool and found out there are huge differences between findniche database to aliexpress data

for example the keyword "Spongebob" will give you around 90 results findniche have fetched, while the same keyword in aliexpress.com will bring you more the 1000 results