megseoh AAM does not offer the lighting-fast support. We look into support messages pretty much couple times per week due to limited resources. We also offer twice a week office hours where you can ask questions in realtime.
Plus Package like any other premium AAM add-on is the addition to free AAM plugin, so you absolutely have to keep them both. All premium AAM solutions are regular WordPress plugins and should be installed like any other WordPress plugin. All the new updates to add-ons can be applied the same way as to any other WordPress plugin. You can read more about this process from this FAQ.
Feel free to ask more questions.