I have been trying to login to my UPlay account on the SC Spider Bot app for a little while now.
Every time i try to log in it says "Unknown Username or Password".
I have checked every time for spelling errors, I can guarantee there are none.
And I can go to the Ubisoft website, try to login with the exact same email and password, and it works fine.
I am having this problem as well. The Uplay account works just fine on the PC client, and here on the forums. However, in the Android app, it rejects it! How unfortunate, I was hoping to unlock the other items through SpiderBot. This, combined with my Uplay version of Blacklist Deluxe not actually able to launch (I'm having the issue where it goes straight to the Uplay post-game roundup display right after launch), really suggests that the quality control for Splinter Cell and Ubi / UPlay products isn't up to par at the moment. I hope it can all be fixed soon.