PA Zen SD Card & LED Issue

[AirFright]

Hi
I am having an issue with my PurpleAir Zen monitor that I believe is power related but I am still unsure.

When I power up the sensor, it turns on Blue for about 15 seconds, then goes to Green. After about 1 minute of being Green, it then suddenly turns to Pink/Purple. The map has recorded the spike in AQI & the SD cards shows as undetected every time this happens. It also drops my sensors confidence score to around the 85-90% mark. I checked the AQI spike against my handheld Temtop M2000 and that read 2.4ug/m3 of PM2.5.
I have tried using 3 different power adapters today, and the original adapter I used is rated to 5V 550mA, which had no problems until this morning.The BME chip was reading 4.1-4.4V previously, but this morning it dropped to 3.4V or lower.
The second adapter I tried was rated to 5.1V 2.1A, but the voltage was still reading between 3.9 & 4.5V
The adapter I am currently using is rated to 5V 2A and the voltage is still only reading around the 4.4V mark.
The cable I am using is about 1.5M long.

I have attached a screenshot of the sensor’s IP interface and the 2 adapters I was having issues with.
Could this be an issue with my power adapter or my sensor?

Thank you

Original power adapter & AQI spike & Analog Input dip recorded to the map

2nd power adapter

Current power adapter & sensors IP interface

[AirFright]

Hello
Also, since I put this post up, the SD card status indicator on the PurpleAir Map keeps changing between ‘SD card hardware is present’ & ‘SD card hardware is detected, but no data will be written to it’. It usually changes to Not Detected for 2 minutes then goes back to detected for 10-15mins, then back to Not Detected again.
The SD card is formatted to FAT32 and has been working correctly up until a few days ago.
Is this a problem with the Map or is the SD card holder in the Zen sensor not holding the SD properly?
I have also added some photos from the map showing one of the the occurrences timestamp & the issue.

Thank You