Its hard to give a perfect answer as it depends on what features of WPTC you have enabled and other aspects of your WP setup. Please take everything I say as a general suggestion and not hard fact given I don’t know your setup.
In general we would recommend against having multiple edge caches enabled. It looks like WPTC does have its own edge caching, but I don’t know if it can be disabled.
Otherwise if you are just using the plugin alone, I wouldn’t expect there to be issues. You will need to be aware that you have both a server side cache with WPTC and an edge cache with Cloudflare, so cache issues could be due to one or the other.
If you decide to use APO ( https://support.cloudflare.com/hc/en-us/articles/360049822312-Understanding-Automatic-Platform-Optimization-APO-with-WordPress ) which is available for free in the pro plan, then after enabling please purge all of your server side caching, so that APO can work properly. I don’t think we have positively said WPTC and CF don’t have any issues, but I wouldn’t expect there to be anything that would be fundamentally incompatible between the two.
