Ulogin - to be or not to be?

Question

Social media

Hello!
There is such a convenient service for authorization through social networks, ulogin.ru
A couple of sites I work with it in combat mode, so far without glitches, for half a year already.
I want to make 1 more large site and now I'm wondering if users will trust authorization through uLogin?
Will he scare them off?
And what happens if tomorrow uLogin leaves, what will happen to my local user base (how will they be able to log in already)?
The site is not financial, it is created for communication.

Answer 1

ulogin will break - remake it for native authorization.

Answer 2

Personally - I hate non-local authorization. (And also the email requirement)