Unable to install and reactivate LINE app on my new iPhone 16

Just got a new iPhone 16 and had to reload some apps etc. I have been unsuccessful in reactivating LINE. So I deleted it from iCloud ( by doing a new backup with Line turned off). It does not appear anywhere. But I cannot get the app from the store and restart the whole thing (I know I lose the data - but all the login and signup methods failed) - it continues to want to download from the iCloud and not let me get it new from the store. so ... I cannot reactivate and I cannot start over with LINE. Ideas? Thx

[Re-Titled by Moderator]