Does anyone know the maximum length of a valid password in Paypal?

[leo_prov]

Does anyone know the maximum length of a valid password in Paypal?

I tried length 100, 50, 25 to no avail, and the website won't tell me whether it's valid or not and why.

length 13 finally worked. However, I want the max length to generate the strongest password possible.

Thanks in advance for your help.

[dfrye7]

Appears to be 20. Spaces are also a no-go. No idea why