Willemijn

Hi everyone, hopefully someone can help me.. I have been using Jamulus without problems for a while, but suddenly I can't hear myself or others anymore in the software. When I'm talking I can see the green lights moving. Don't see any problems with the Asio4All driver. Right input/output is selected and I don't have problems to hear people or to be heard in other software such as Zoom. What could be going on? Thanks in advance for any help Kind regards, Willemijn