This message is printed before the installer starts a sequence of processes to check, download and install FTL.
The first step is FTLcheckUpdate(), where it checks if FTL needs to be updated, comparing the local FTL with the remote one.
If the local version needs to be updated, then FTLinstall() will download and install the new version.
If you are noticing this step is taking a long time to complete, it could be related to a slow machine, a slow internet connection or some other network issue, but we never noticed any unexpected delay.
It is unlikely you are having the exact same issue, because this issue is more than 1 year old and a few new versions were released. A lot has changed.
Please start a new topic describing the issue and include any error messages. Also, remember to tell us if this is a new installation or an update.
The issue was solved when I removed the old filters and regexes, did a complete cleanup of pi.hole, and this took hours. No need for a reinstall or repair, now the issue has disappeared.
Hope this method is helpful. Somewhere along the line, there might have been a regex that impeded the action of the FTL download, we'll never know.