We are not turning anybody down but we hope you are able to participate in a meaningful way that gives you insight into the event. Perhaps you could join another syndicate during the Beta? Syndicates will not be locked so that is certainly an option. That is something you could coordinate in the Beta-only forum.
Each device (phone, tablet) can only play a single Account/player ID. If you have a 2nd device, that second device could run a different account (as long as the NDA was signed for each player ID).
For example, lets say you have 2 accounts and 2 devices. You would do the following:
email betasignup@gree.net
Once you receive the NDA link, click on it.
Fill out the NDA and provide your player ID for account #1 (there is a field for that on the NDA)
Click the NDA link again.
Fill out the NDA and provide your player ID for account #2
When the Beta is ready, you will receive 2 emails with a link to the Beta (one for account #1 and one for #2)
On device #1, you click one link and register the ID to that device
On device #2, you click on the other link and register that ID to that device
I hope this helps.