Jet Protect Security Warning Persists

The security warning already much reported with version 1.4.3 did go away for a day or two but is back I’m afraid. I have pasted the exact wording which is unchanged, implying that the issue is in the free version and suggesting the fix is to go pro. Reading the other posts I would say the Jet Protect message itself is in error on that score. Here is the message as of a few minutes ago – hope it helps:

What is the problem?

The installed version of WP Fastest Cache (1.4.4) has a known security vulnerability. How to fix it?

Update to WP Fastest Cache 1.7.5