Uploading Certs onto the SparkFun DataLogger

I have been having a lot of issues using the MQTT Secure Client configuration for the SparkFun 9DoF DataLogger after following the guide online. I have certification files that are secure with a ca, ca.crt, and key files for the MQTT Secure Client but I do not know how to upload them into the DataLogger so that when I upload the filename (string) it can call it when connecting to the MQTT broker.

I was wondering if anyone could help me out, or has prior experience with certs and the MQTT Secure Client on the SparkFun 9DoF Datalogger! Thank you so much for your help and I hope you have an amazing rest of your day!

Following up @ other post/thread viewtopic.php?f=121&t=61584&p=249336#p249336