Yes, you can use the WooGallery license on a test or development site. A user can activate the license on some Under Construction sites where the license activation will not be counted. See the List below:
- 10.0.0.0/8
- 172.16.0.0/12
- 192.168.0.0/16
- localhost
- *.dev
- *.test
- .*local
- dev.*
- staging.*
- staging-*.
- *.staging.site
- *.wpengine.com
- *.preview-domain.com
- *.mystagingwebsite.com