Duo Video Chat + Phone Calls funktioniert nicht

By subscribing Second Phone Number plan, choose different number to call/text to different people, for dating, deliveries, sales people, business partners, shopping online, selling items on Craigslist, Etsy, Ebay, to friends or to strangers. It's such a relief!  Share life moments with your friends in group! - Calls and Texts will be deducted from your credits by default, unless you subscribed to some destination call or text plan, which saves your money a lot. - If any area rates are too high, just contact us, we will work on it.  Free Video Chat, New Real Phone Numbers, Private Text and Calls - all in Duo Phone, the Best Video Chat + Phone App.  Give your life a next plus! • Cross platform supported, communicate with friends seamlessly! • Change Number and Switch Number is pretty easy as you need! • Express yourself with Pics, Stickers, Gifs, and Emojis.  For Free Video Chat, just send an invitation link to your friends, then you will be able to enjoy FREE VIDEO CHAT together, with crystal clear quality.  Choose a nickname, share your invitation: call me, txt me now free on Duo Phone.  If you earn credits in Free Credits Center each day, you can even make global phone calls for FREE.  Switch between numbers is pretty easy in Duo Phone, which empowered you to switch between your different life roles easily.  For International Texting, it allows you to share text, photo, voice, video messages with any number around the world.  Protect your own primary phone number safely for your private life.  FREE benefits are on promotion for different Number Plans now!  Get 2nd burner phone numbers for dating, shopping, working, business, travel.  For International Calling, you can call 200+ countries numbers with very cheap rates.  Start the journal with your friends for FREE now!  What's more, the invitation promotion is ongoing, come to earn your credits!  Top up some credits, then call, that's all.