Otherwise here is a good webpage were you can buy activation keys very cheap and full legit. The only is there is no support from Microsoft for this keys. But who needs that?
https://pixelcodes.com/
Just buy a windows 10 key and and an Office key and you are fine. Or uninstall Office so you will get rid of the annoying message. You said you are not using Office anyway so...
Sometimes it is an underlaying cause. My wife who is a hairdresser helped a neighbor by telling her that she must take care of her diabetes and also sleeping habits and that helped. She dont have thin hair anymore. It look normal. And she feels better too from taking good care of the diabetes.
I did a lot or research about 15 years ago and ended up with Prins. That time it was the best brand. Also used in Europe a lot. Don´t believe in what they are saying here about burning walves etc etc. If that shoult happen then there is something wrong with the equipment. And not forget to drive with Benzine every fourth or fifth tank in order to grease the engine. And preferable with the highest octane you can find. Higher octane means more lead and that means better grease. But your FB page looks good as well. Be sure they are mounting an European equipment. They have probably different brands same as the Prins garage had that time. Better pay more and get good quality. One more thing. You must change the filter as saying in the manual. Many thais try to save money on that and in the end they get problem. That is not were you want to save money. Good luck!
And much better for the environmental. Much cleaner than benzine or diesel. I can recommend the brand Prins from Nedherland. More expensive but good quality. Otherwise there are systems from Italy, Hungary, India etc..
https://prinsthailand.com/