All questions related to installations, configurations and maintenance of Advanced Host Monitor (including additional tools such as RMA for Windows, RMA Manager, Web Servie, RCC).
1) Compute and check digest for entire page
With this option enabled HostMonitor will compute CRC, MD5 or SHA digest of the downloaded data and do a comparison each subsequent time test is performed. If the hash changes, the test will have "Bad contents" status.
If "Download nested frames" and/or "Download images" options are enabled, HostMonitor will compute digest for the nested frames and/or images as well.
2) Recalculate checksum when page content changes detected
With this option enabled, the new CRC or digest will be recorded as the default in case the error "page content changed" occurs, so the test will return to "Good" status until the digest changes again.
This will work if HTTP/HTTPS request returns data with new posts.
But many web servers use scripts, so web page retrieved from the server always will be the same (script code), then browser executed script and script may get data (posts) from database.
In such case URL test will not help you. HostMonitor is not a browser, it will not execute scripts and render web pages.