Our Alexa skill is live for a few weeks but users started to report issues in the account linking process. The problem is with the redirect URI value, which is malformed, thus leading to a dead end when browser/app opens the link.
Note that it doesn't happen for all users, just only a few (10%).
Here is an example of redirect_uri parameter value found in a request issued against our oauth2 server received on 2016-07-13 at 00:22 UTC
Note the missing slash between com and api.
Skill configuration hasn't changed since it's live, and it happens only with some users - but not on a specific device, since iPhone, iPad, Android seems to be affected.
Has anyone faced a similar issue?