MDM Intune Missing Certificate issues

[orsty3001]

We have around 600 Samsung devices in my organization. They are all managed by MDM. Over the past few months, none of them will retain their wifi certificates. We can clone the group associated with network certificate delivery. This will deliver the certificate but as soon as the device connects to our wifi it loses the certificates. We have a ticket opened with Microsoft but haven't really gotten anywhere with them. They are now pointing the finger at Samsung or Google. 

Is there a fix for this? All of these devices are running Android 12 or 11. 

[-Robot-]

Can I ask what WiFi you use?

[orsty3001]

• EAP method: TLS
• Identity: your Company email address
  
• CA certificate: MyCompanySSID_WPA_EAP_TLS_NULL_0
• Online certificate status (if applicable): Don't validate
• Domain (required for Android 11 or higher):
  
  1. Americas: na.mycompany.com
     
• User certificate: MyCompanySSID_WPA_EAP_TLS_NULL

Details are above. It's Cisco hardware. It requires a certificate to connect. We have a guest network but that has no access to the internal network which these devices need in our plants. All mobile devices are managed by MDM Intune.