You may want to check basic troubleshooting first http://www.globe.com.ph/help/troubleshooting/cant-connect
If all things fail, try to go to a Globe Store to have it tested. Bring proof of purchase with you in case it needs to be replaced.
Have you try to use different sim to your Wifi Stick? if still occurs that you cant use the device might as well Go to nearest Globe store for physical and so on checking.. ; Bring proof of purchase with you in case.. once validated they'll replace it with the new. Thats Wonderful! bebangrea