Hey 
Most connection or compile issues come down to one thing: a version mismatch between the app and the InstantIoT Arduino library. Before reporting a bug, please make sure both are on the latest version — it fixes a surprising number of problems on its own.
1. Update the app
Open the Play Store → search InstantIoT → tap Update if it’s available.
2. Update the InstantIoT Arduino library
In the Arduino IDE → Tools → Manage Libraries → search InstantIoT → click Update to the latest version.
Why this matters
The app and the library talk to each other over a shared protocol. When one is recent and the other is old, you can get connection failures or odd behavior that look like bugs but are just an incompatibility.
Keeping both current keeps them in sync.
Still stuck after updating?
Open a new topic here and include:
- Your board (ESP32 / ESP8266, which variant)
- The mode you’re using (Direct or Server)
- App version and library version
- What you expected vs. what happens — paste any error message as text, not a screenshot, so it’s searchable
The more you give, the faster we can help.