Hi @jsampaio
Sorry to hear your having issues. You mention that you flashed your own SD card, it looks like you have done a good job, however did the emonPi not come pre-assembled with an SD card pre-installed? Do you have you #XXX order ID number to hand, so I can verify exactly what was shipped.
All sensors must be connected before powering up the unit. For the emonPi to detect the temp sensor and CT2 they must be connected before power up. Restarting the RasPi is not enough, try to fully shutdown the unit and remove the power then power up.
The emonPi LCD defiantly dost not look right. It looks like a hardware issue. Could you double check the I2C LCD connections to the emonPi PCD and the contrast adjustment. After adjusting the connection you will need to restart the unit to try to reinitialize the LCD.
Yes, you can check /var/log/emonpilcd/emonpilcd.log
If you are not seeing any Inputs on the Input page of Emoncms then something is not right with your hardware.