I use Endicia.
In Dazzle, open layout file, there is a choice for APO and US Territories large.
When you open that layout, the return info should already be filled in.
Under the Customs Form tab, fill in the proper fields, including checking the NOEEI 30.37(a) button.
Then print. I got three copies. The first is the only one I used.
"For most shipments, you'll be able to use one of the following Exemption and Exclusion Legends:
If you're shipping to Canada, enter "NOEEI 30.36."
If the value of your shipment is less than $2,500, enter "NOEEI 30.37(a)."
If the item you're shipping is a gift or humanitarian donation, enter "NOEEI 30.37(h)."
This info came from someone on the other forum.
I will find out if all this worked if I don't get a "where's my package" email from a service person someone in Germany in a couple of weeks.