No help from Voki Support

I have been using Voki Classroom for several years with no problem.  Now students are unable to record for more than 30 seconds without getting the message that  time limits are exceeded.  We have tried with Chrome and Firefox.  I have repeatedly filled out the support email form and have received nothing but perfunctory messages from support.  I sent a video of the problem and received no help.  I am beyond frustrated.  Can someone PLEASE look into this?  Either back up your product support services or give me a refund. Enough is enough