Just think. Zelle is reversible, as far as i know. So your client paid with zelle. What happens if your client reverses his payment after having received btc?
This happenes very often!
Also what happenes, if your client sent money from a hacked bank account?
Police will make you responsible!
Just think, why your customer pays  30% fees? No legit buyer does that.

Your friend Aladin will be scammed, so he will be angry with you...or you will be scammed and responsible for online fraud and money laundry, if it was from a hacked bankaccount.
If you are from a third world country, where you get not sued, at least you should know, that this smells like scam, and yes, its a question of karma.
do you want to be involved in a scam? There is a victim somewhere, thats obvious...

Even if YOU did no scam, moneylaundry means , someone scammed and you wash the scammed money. Thats a crime.

If everything is legit, why do you use Aladdin? Just open an account at any exchange, that accepts also fiat, and verify your account.