Folks, this is not new news. In fact it was fist reported back in 2017, but you will start hearing more about soon. Adobe Flash Player is finally dying. All major browsers will be phasing it out and it will most likely stop working all together sometime in 2020.
So what does this mean? Well if you (or another teacher) uses a site that requires Flash player that site will work for a little while. You may have to give it permission to use Flash player over and over again and by the end of 2020 it simply will not work.
There are a lot of BBC educational sites that were built using Flash. Here is a popular one that I have seen in a few schools.
BBC archived all these sites a while ago. This leads me to believe that they are not going to rebuild it for modern day standards meaning it will eventually cease to work 😦
So you have time. Start looking for other resources, reach out to your PLN, search the web, talk to your colleagues and find that replacement piece for your unit.