The backup config file in v.5.2.0-5.2.4/v.5.3.0-5.3.1 which contains certificate config may not be restored properly(causing config to be lost). After upgrading to v.5.3.2, please discard the old v.5.2.x/v.5.3.x config file, backup the config file in v.5.3.2 again, and it should work well.
Keep the old SSL version's predefined config for a smooth upgrade.
HSM doesn't support TLVv1.3. If the HSM certificate is used in VS, the TLSv1.3 handshake will fail. Workaround: Please uncheck the TLSv1.3 in the SSL profile if you're using the HSM certificate to avoid potential handshake failure.