I can't type or hear anything
I've been trying to type and it doesn't work for me. When it asks me to translate to english from french I can't cos I can't type. When I have to type what I hear I can't hear anything or type! I've refreshed multiple times, Logged out, restarted my computer but none of these have worked..
Is this on the internet or on a mobile app? If it is the internet have you tried another browser? Also, it would help if you gave more detail on which computer and operating system you are using.
If none of this works, it might be that you're on the new Duolingo site. Some of the userbase, mostly people who joined in the last month, has been moved to a new version of the site. Since they're still testing the site, it has a lot of bugs, which they're trying to work out. Report it at this link (only after you've tried everything Psionpete suggested).