S2Drip not working correctly

Hi All,

We have a website which is using the s2Drip function. The user in question in the database joined in March of this year, but can only see week 5 whereas they should at least be able to see Week 12. Every other member can see this correctly. Is there anywhere in the code we should be looking for this particular user.

We know the shortcode is setup correctly because other users who joined within 2/3 days are seeing the right content at the right time.