Recently I renewed my Let's Encrypt SSL certificate and the Android version 7 and below devices started to show network error problems. Other devices that have SO above version 7 are still working.
I decided to change to zerossl because I read in a blog that these problems don't exist with zerossl certificates. With this option any request of devices are blocked. Even with SO number above 7.
Other option was renew the Let's Encrypt SSL certificate with DST Root CA X3 parameter, but this certificate will be expired this year.
Which option or service can I choose to avoid dropping support for Android 7 or lower because of SSL incompatibility?