To fix the issue:

1. Upgrade PHP to 7.3 or later (if you haven’t already).
2. Upgrade cURL to version 7.52.0 or higher and make sure it's compiled with OpenSSL 1.1.1 or later.
3. Upgrade OpenSSL to version 1.1.1 or later.

This should resolve the problem of being blocked by Reddit when trying to make requests with TLS 1.2 instead of TLS 1.3. If you're on a shared hosting service, you may need to contact your hosting provider to request these upgrades. If you're managing your own server, these upgrades are within your control