It's possible something went wrong with the install. It might help to install again now that a little time has passed.
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You might need more space than it seems or your phone's virus scanner/firewall might think it's dangerous. Every time there's an update, a few people have the game be falsely flagged as a suspicious. Since there's new files, there's a new chance for part of it to seem too unknown to let run. Seeing if you can tell the phone to trust it or adding more space could held.