How do I know if the store I bought an item is trustworthy?

[AliciaMullin]

I did a payment with pay pal, but I don't know now if the store is trustworthy since I haven't received any mail from the store about my purchase. I have paid an installment because  I saw it in my credit card account. How can I know now? I trusted it because it said I could pay with Pay Pal. The store appeared in Instagram and it's letibuynow.com

[kernowlass]

@AliciaMullin 

Paypal would not be able to check every individual seller / merchant / company in over 200 countries worldwide that adds Paypal to their website to accept payments.

So they give some buyer and some seller protection. However that protection can never be a 100% coverall so you need to read it so you can risk assess your transactions.

If the item does not arrive or is arrives but not as described you can click on the transaction in your paypal account and using the report a problem link on that details page open a dispute.