How were you able to obtain a license, as I want to buy some AP's off ebay as well but they don't come with license.
Just get the serial number off the units that you are buying before buying them. and go to the Adtran sight and pop them in and they should be able to register to the your. register them under your account and get the lic. Key and download the lic. File and upload to vWlan. if they are new you will have to buy the licence from a third party. if they were pulled from a working environment they most likely already had the lic paid for.
See, the single hole at the top is a reset button: Bluesocket BSAP 1920/1925 Wireless Access Point Quick Start Guide
The defaults are:
Default Gateway IP: 192.168.190.1
Default username: adm1n
Default password: blue1socket
Default subnet mask: 255.255.255.0
Default DNS server: 192.168.190.1