I've noticed a thing regarding Network Lock settings which leads to a softlock in the software: It is possible to have Network Lock > Ensure in session selected while Mode is set to None. When trying to connect with these settings, an error message will be shown suggesting that such a constellation is not undefined behavior: There is no available or enabled Network Lock mode, sorry.
But the thing is, by this time Eddie won't bother connecting at all: If you then correct this by selecting any NetLock mode, Connect to recommended server doesn't respond and selecting a server in the Servers tab won't do anything. To fix, one must restart Eddie completely.