I'm also having trouble getting this to work correctly. Following
Adobe's guidelines, 'exp' should be set as POSIX time (seconds since the
Epoch).That can be implemented in Javascript like this: const
thirtyMinutesFromNowInSeconds = (Date.now() / 1000) + 30 * 60; However,
changing the seconds affects the access token response very little. It
seems that no matter what I enter, I get expires_in: 86399995 as the
response.Building on this, I think the 'expires_in' parameter returned
in the access to...