You’re definitely not alone, OP. I and several people I communicate through Skype with have had one problem or another with it. For me, Skype has been chaos ever since they rolled out the new mobile version. Sometimes I can’t log in at all and sometimes I receive messages without being able to send them. No point in reinstalling or trying to tamper with the software, it’s obviously a problem with Skype itself. Nothing to do but wait it out and use some substitute in the meantime.