W3 Total Cache incompatible with SG Optimizer

Greetings,
we have been using your plugin and service for this website for a while now, before and after changing hosts to Siteground. When we first moved the site, we decided to use Siteground’s SG Optimizer cache plugin for mostly all cache related details, and W3TC mainly to connect to Stackpath, our CDN service provider. All worked fine for the last couple of months, but suddenly, W3TC is in apparent conflict with some of the plugins; the site stopped loading to the browsers. We only see a permanently rolling pin.

We spoke with the host and they could not find the problem coming from their server settings, etc.

We have disabled W3TC for obvious reasons, the site works fine after that, but we would like to continue using your plugin.

What can be done to solve this apparent incompatibility issue?

Thanks for checking.

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