nokia lumia won't update to w10 anymore

My 930 was already a year updated to w10m but the last month my phone showed some 'errors' like battery 50% after a video(1 min) 12% and after 10 seconds it goes off with the goodbye but i hear the sound of the video the whole time even after 1 hour. and in the morning it didn't booted so i used lumia recovery tool. everything works fine but it has downgraded to 8.1. i miss much feuture's in the windows 10 update. so i tried using upgrade advisor it says that it isn't available for my phone?! i had w10m on my phone, so i tried windows insider. i get a error that my connection is bad or my time isn't correct. but it is. it is automatic. the phone is btw the normal phone it doesn't have a provider name or that sort opf things. please help me, and don't pay to much attention to my grammer.. english isn't my main langauge

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