Hi, sorry, I do not know much about BOP's but curling leaves are often caused by lack of water. Is it a new transplant? I mean has it just been divided from a larger plant? If so perhaps the root system is not established enough to support the top growth. If that is the case I would give it a bit of shade until you see new growth then gradually move it back to a brighter spot. That said, I think the plant looks good, there does not seem to be any evidence of insects or disease. Maybe you just need to give it time to acclimate to your location.
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