puffy eyes from crying or did i ruin it 3 days post-Restylane?

Follow up with the provider for the best assessment of your situation. You likely didn't ruin the treatment but need to allow time for swelling to settle down, which peaks day 2 to 3 post injection.

However if you aggressive rubbed the eyes in the process, then yes it is possible that you mushed the treatment. I recommend you see your injector and get assessed.

Crying should not affect Restylane.  It is normal to have swelling and bruising, especially in the delicate tear trough area, for about 1-2 weeks following treatment.  It is always wise to follow up with the physician that performed the injections with any questions or concerns. 

Photos would be extremely helpful. If you were really lucky not to have bruising, this doesn't mean that you wouldn't have some local swelling which would mask residual bags. If this is so, you may have had suboptimal treatment and would need more. However, neither washing your face nor crying will affect the result.

Tears won't affect Restylane, but aggressive rubbing of the eyes or rubbing with tissues, wouldn't be ideal. So hopefully this isn't what you did!