You have 3 options here:
-Have someone send your dongle to you.
-Buy a new dongle and activate Steinberg Zero Downtime. This will give you a license for all Steinberg products that works for 24 non-consecutive hours (that’s between 4 days to one week of work depending on how long your Wavelab sessions are) while you wait for support to transfer your licenses. This will make your previous eLicenser stop working.
-Depending on what you’re planning to use Wavelab for while traveling, Wavelab Elements may be sufficient. It doesn’t require an eLicenser, but I don’t know if it can open Wavelab Pro files. You can download the 30 day trial here: http://www.steinberg.net/en/products/wavelab/trial.html