DOL will not accept https:// URLs. DOL2 seems to accept them but it goes into an endless loop when it tries to load the URL and the only way out of it is to remove the DOL2 app and reinstall it.
I have never seen any IPTV service that works 100% of the time on all channels. That's why I subscribe to several services. But it's a shame this one has so many problems because it has some TV channels I like that none of the other services offer. I know it's cheap but I would happily pay more...