Hey Brajesh I got the email and I was able to recreate the issue.

This is what happens:
I create an account.
I click the link in my email
Get redirected to my profile page
Log out
Click the link again
Get the invalid activation page.

Your plugin works perfectly for auto-logging in and redirecting to profile. But once someone logs out and tries to click the link again. They get the invalid activation key page.

Hi Brajesh, your plugin worked great when people signed up through the buddypress process but I have Facebook log in as well and most of my users were using that.

They kept getting 2 urls when they signed up through Facebook so I needed to go a different way and the only option I found was SB Welcome Email Editor. It doesn’t auto login users but at least they are not getting mad about the 2 urls on the Facebook sign up process.

Overall BP Autologin on Activation works great and I wish I could use it in conjunction with SB Welcome Email. But with people signing up through Facebook. It wasn’t working for them.

Thank you so much!