The Glasswire Version 1.0.30 beta caused a network failure (+ JDownloader 2.0 usage). The own (Glasswire) firewall was turned off. JDownloader not could download.
When GlassWire I turned off (+ GlassWire service I turned off) + reboot, after network worked. JDownloader 2.0 too worked.
Thank you for reporting this problem. We’ll try to recreate and fix this on our end.