I purchased realms + and I cant replace the default world with my other world, plz help

I purchased realms + for two people, I then clicked "replace world" so that I could upload a world I've been working on for over two years so that my team can work on it without me having to be on, but when I tried to upload the world it said "an error occurred" at first I thought it was just temporary but this has been happening for over a month, it'll work with smaller worlds that are about 30MB or less but not big worlds. the world I want to upload is 160MB, but I was able to make it only 125MB but it still didn't work, I tried it on Xbox one, then I exported the world to my computer  on the windows ten edition of Minecraft but the same error came up. like I said this has been happening for over a month and I don't know what to do, please help I'll do anything (the pictures I added are of the stages that I go though to upload the world and then what it says after)