With the Naira problem,Can one still buy stuffs online with official rates like aliexpress and co, or would it be done with the black market rates??

Yes,

You now need to make research if what you want to buy is for sale or for personal use and depending on this, you can go for what you want. Online purchases has not been on official rates since the beginning of this dollar chaos, it can go up to or more than 250 and if you are reselling, you need to use the black-market rates in your calculation of profit, but remember that you need to first look out for made in Nigeria products and support us rather spending expensive money to buy from outside the country.

it seems am FTC

Yes you are, Thanks for the info... It's for family purchase, jewelries. You know jumia n others are a little expensive compared to aliexpress n co.