"Safari can't find the server" and Bluetooth issues

Since the last macOS update to Sequoia 15.7.1 there have been two consistent issues on both my Macbook Air (M1) and Macbook Pro (M1). The first issue is with Safari continually receiving the "Safari can't find the server" error, especially when clicking on a link embedded in an email or other source. It's maddening. When I copy the link address and paste it into Firefox, I have no problem at all. There is nothing wrong with my router, internet connection, etc. I've run all the diagnostics, resets, etc. to no avail. I've repeatedly cleared caches and histories, and have deleted cookies. It's a pain in the *** as I've lose vast amounts of time. BTW, I even had to use Firefox to get to support.apple.com in order to post this issue!

Second issue is with Bluetooth no longer being able to connect to certain devices (e.g. my Sony receiver) to which it always connected before the last update. The devices are found by Bluetooth, but will not connect.

Again, both computers affected, both recently updated to Sequoia 15.7.1. What gives? Someone from Apple needs to fix this. Calling Support did not help.