I feel your pain. Computers have been standard office equipment for thirty years now, although the interfaces keep changing. But it seems to me to be similar to an office clerk completely freezing up when form TJ105 is updated to TJ105B to allow for a two character country code to be used in the address. And it's necessary to completely re-teach the person how to handle the form, that time and the next ten times it comes across that clerk's desk.
My s-in-law, who has been using computers for decades on a regular basis was puzzled when she consulted me about a problem and I asked her if she had tried re-booting her computer.
She claimed to have no knowledge of the term "re-boot".
I explained it to her and walked her through the process (over the phone, no small task in itself) of right-clicking the Start button, then clicking "Shut down or restart" and then selecting "Restart".
She was stunned to discover that it fixed her problem and even more surprised when I told her that it was an age-old first step in problem solving computer glitches.
She said that next time she'd try that, but I have my doubts.
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Now if only I had someone who could help me figure out why YouTube TV on Chrome is so screwy about connecting to my Chromecast device. Sometimes it works fine, others require all sorts of starts, stops, re-boots, incantations, and prayers to deities I don't want to believe in.
I have been unable to discover any pattern of things which works reliably. All I know is if I try enough different things enough different times in enough varying orders then sooner or later I can get it to work. Fortunately it doesn't happen all that often, and when it does I can usually get it straightened out after the first few attempts.
This is why I never went the cable-cutting route while Mrs. qg was still alive. She would never have put up with that crap, and would have figured a $150/mon. cable TV bill was cheap at the price. And it probably would have been far worse. She was cursed where anything remotely computer related was concerned, and could manage to get herself stuck in places I was surprised she could even find.
(Sometimes I really miss her.)