Tunnelblik is complaining about 'comp-lzo' being deprecated and the VPN server should be upgraded.  The current version of OpenVPNis 2.5.7.

Here is TunnelBlik Error/Warning:

This VPN works now, but may not work in a future version of Tunnelblick.
The OpenVPN configuration file for 'xxxVPN' should be updated so it can be used with modern versions of OpenVPN. It contains these OpenVPN options:
• 'comp-lzo' was deprecated in OpenVPN 2.4 and has been or may be removed in a later version

Tunnelblick will use OpenVPN 2.5.9 - OpenSSL v1.1.1v to connect this configuration.
However, you will not be able to connect to this VPN with future versions of Tunnelblick that do not include a version of OpenVPN that accepts the options.