ADSSP Free limitation

ADSSP Free limitation

Hi,

I use the ADSSP Free version to notify password expiration.
It works great for 2 subscriptions, but i made a new one recently link on a group, and no mail are sent.
Is there a limitation of number of subscription or on the number of users in the free version ?
We are going to buy the full version soon to synchronize password for 10000 users, but for now the only version i have is the free one, and it has worked fine to manage until 10000 users in the main group, so i don't think that there is a limitation on the number of member.

Do you have an idea ?

Thanks and regards.

Anthony