The same happens to me. A couple of months ago I took the free trial of Realm and it was going perfectly, I could upload and download the worlds without any problem.the free trial expired so I decided to remove the Realm. A couple of weeks ago I decided to buy my own Realm but I find that my 30mb world gets an error when trying to upload it to the Realm. When I used the free trial the Bedrock version was 1.14.30 and the world back then weighed 19mb. the world originally comes from Android but when I uploaded it to Realm I downloaded it on the Switch and I have a copy there, I kept playing the world from Android and that's the one I want to upload to my new Realm but I can't, I tried to upload the copy I have on the Switch (19mb) and it uploaded it without problems. I decided to restore the world because the world I want is the one I have on Android (30mb) I tried to upload it again but it failed again, Try closing the Realm and uploading it while it was closed and failed once again. Try to open the Realm but oh, "Cannot connect to the Realm, failed to open the Realm".
The same happens to me. A couple of months ago I took the free trial of Realm and it was going perfectly, I could upload and download the worlds without any problem.the free trial expired so I decided to remove the Realm. A couple of weeks ago I decided to buy my own Realm but I find that my 30mb world gets an error when trying to upload it to the Realm. When I used the free trial the Bedrock version was 1.14.30 and the world back then weighed 19mb. the world originally comes from Android but when I uploaded it to Realm I downloaded it on the Switch and I have a copy there, I kept playing the world from Android and that's the one I want to upload to my new Realm but I can't, I tried to upload the copy I have on the Switch (19mb) and it uploaded it without problems. I decided to restore the world because the world I want is the one I have on Android (30mb) I tried to upload it again but it failed again, Try closing the Realm and uploading it while it was closed and failed once again. Try to open the Realm but oh, "Cannot connect to the Realm, failed to open the Realm".