Free MongoDB Atlas connect from anywhere not working

I am using MongoDB and a NodeJS+Express project that is deployed to Google Cloud Run. For learning purposes, I need to stick to Free Teir. So, I setup the Network Access to be “Access from Anywhere” (0.0.0.0/0). I also have my local IP address specified. I can connect from my local machine running the NodeJS+Express application but, not when it is deployed from Google Cloud Run While the other logic runs on Google Cloud Run - I get a network access error that states in the Google Cloud Run logs as:

MongoServerSelectionError: 0038A49ADC3E0000:error:0A000438:SSL routines:ssl3_read_bytes:tlsv1 alert internal error:…/deps/openssl/openssl/ssl/record/rec_layer_s3.c:1586:SSL alert number 80

Which upon searching is a network acess issue. Any help appreciated. I know there are private enpdpoint options for $ fees but, as developing with students for learning, this is not possible.

Best, Lynne