If one is looking for an alternative, may I propose Psono? (I am the main developer behind Psono) It doesn't suffer from some of the reported issues and as such uses for example scrypt instead of pbkdf2 for the hashing of the masterpassword and the urls are for example also encrypted. Noteworthy its open source so everyone can take a look at the source code or ask questions in our discord channel. https://discord.gg/RuSvEjj