Can't strengthen Business 1 on iOS
I have not been able to strengthen "Business 1" on my iPad or iPhone for the past few days. Other lessons work fine. I did it on my computer in the end and it worked.
On iOS, it still shows an error when I try to strengthen this one lesson: "Could not connect to Duolingo. Try starting the session again."
They seem to have done something to the restrengthening algorithm. On iOS now, I can't do any overall skill strengthening, and about half of my non-gold skills won't strengthen either. When I can strengthen a skill, I get a new type of question where I'm asked to choose what a word means from a list of three words, and I usually get the same question three or four times in a row. Not particularly helpful. I hope they address this soon.