On Tuesday I requested the addition of YouPhone to my account (with number transfer from landline). On Thursday evening I noticed problems in connecting to some Web sites. At first I assumed it was Wifi issues, but when I turned off Wifi on my phone these problems weren't there. I wondered if it was related to the transfer. I was then able to get my laptop to access everything if I used my phone as a hotspot. Thankfully I have a good data allowance on my phone.
So where is the problem likely to be? I hadn't made any changes to my laptop or router. I wondered if it might be DNS related, so I changed my DNS server on the Fritz Boz to the default ISP settings (previously using Cloudflare settings on router and laptop/phone.
In a related question, does anyone have a Fritz Box working with a Gigaset VOIP base station and YouPhone? The Gigaset doesn't list YF in its list of settings, so how do I configure it?
Extra info: ping to ipv4 (1.1.1.1, 8.8.8.8) fails, but ipv6 works fine.