Add Dual signup feature to website for Chat app. -- 2

Adding Webiste signup featue to Chat app is required.
Website: Pharmatalk.kr ( CakePhp based SNS site), App: Firebase based Android Chat
* related information, and, current Website app ( not chatting app) will be provided for reference

- Current Website app : already attached, or, download via below link
https://drive.google.com/file/d/1VMLvqVUf7YMziCRxiuqG8dotV6qRFXm0/view?usp=sharing
* Rest APIs documentation page for above Website app
https://travel.moosocial.com/api/document ( you can check how to use APIs in above apk)

- Target Chat app : will be delivered through chat ( due to file size, could not attached here)
https://drive.google.com/file/d/1Y8iAb5laYPTDQBgAC5X5aFWOIIJ_Z6DB/view?usp=sharing
* source scripts

Please test attached Current Website app, first., the, see attached ppt

Full stack developer who can manage both of Android app & Web required.
If successfully completed, will move into next step

In my previous post, missed to attach ppt. (attached here)
In order to estimate possibility, just hope to start Signup step, first ..