Pros
Absolutely zilch, perhaps the worst out there.
Cons
1. No salary + No timeline for the same.
2. No structure in work or management.
3. Unprofessional way of communication.
4. The office is in front of a dump yard, and it ain't no irony.
(1) is enough of a red flag. If someone joins now after reading this, he or she needs to visit a mental institution and take the founders with them.