Admittedly the new version has been trouble-some for many people, with some major changes. We do our best here to try to help solve the mysteries behind how to solve these issues for people. It's not always the same answer for everyone because everyone's system & devices are different. So many variations in set up where one of those areas has started to cause an issue with connection.

But definitely for the new version of LW, it seems you are best to delete the old preferences folder as a first step to solving any new problem.