The current version of PMMP works just fine with 0.16.2. Minor point revisions to MCPE don't always require server code changes. It depends on whether the network protocol changes; and in this case it appears not to have.
Hey @asiklov, what have you done to install? Where did you get the code, what platform are you on? Can you give us more details?
My pmmp installation is working with mcpe 0.16.2 on ios. I use the src too. Could you upload your server folder as a zip?(exclude levels and plugins) That would make everything easier, instead of asking about every detail...
Non-packaged servers should not be used in production. It is better to run production servers in a phar instead of in hundreds of files.