Rancher provider failing to verify TLS Cert

[julianmaze]

I am using kubenav to connect to a local rancher installation on my network. The rancher installation's cert is signed by Let's Encrypt and their ISRG Root X1 CA. When I attempt to load any resources within the kubenav app, I am met with an error saying the x509 cert is signed by an unknown authority. I have verified that the ISRG Root X1 CA is trusted by iOS here: https://support.apple.com/en-us/103100

Any ideas why this could be? The following two screenshot show the discrepancy between safari and the kubenav app.

Thanks in advance!

[achetronic]

Same problem here using k3s :)