If anyone here has parents who don't live nearby and are not very computer savvy, may I make a suggestion?
Install a Remote Access/Desktop software on their system, and on yours. Establish a connection so that if they have any issues, you can connect to their system and see what's going on.
I'd been bugging my mother to do this. She's elderly and living down in Florida. I perform maintenance on her computer whenever I visit... which has been fine. But recently there was a serious issue that required me to help her over the phone. PAINFUL! While she's no dummy, she's not very tech savvy. And when flustered, she forgets things (like something you just had her do 10 minutes ago, she can't remember how to do now upon request). Anyway, her system was suffering some corruption to the point where the normal built-in Microsoft Remote Assistance feature was crashing on her. I had to install a 3rd party remote access software (I used TeamViewer).
Also, and I can't emphasize this enough... it's important to impress upon elderly family members that strong passwords are essential. Plus, anti-virus and anti-malware software.
My mother got a pop-up the other day on her laptop screen and it looked to her like it was from Microsoft. It wasn't. She doesn't visit any websites out of the ordinary (news sites, commerce sites, etc). But somehow, I don't know how, this pop-up appeared. It warned her that her computer was in danger and that she needed to call Microsoft right away. She didn't bother to call or text me first to confirm. She just blindly went along with it... and these fuckers installed crap on her computer and got her to authorize a payment to them. Thankfully my sister talked to her right after that and she had her immediately contact the bank to stop the transaction. It worked. And then she changed her passwords. However... they left a back door. And tried to hack into her system again. In retrospect, I should have had the remote assistance software installed earlier, and I'd have been able to immediately figure out what's happening. Now I'm having to do all kinds of damage control remotely. A real pain in the ass!