I think you should trend carefully with such company especially now that they have displayed some red flags I think it's better to just ignore them permanently if you know you didn't sell/trade anything with them that will result to that amount.
"Required Minimum Hash Power on Reflection ID: 0.598647 BTC"
What doesn't make sense to me is that they are using Lightning Network to transfer this large amount of BTC. Also I have no idea what Hash Power on Reflection ID means.
You know most times these scammers tend to use some gibberish words so as to be able to deceive those that are not familiar with the system. If someone who had never used the program before should see the "Required Minimum Hash Power on Reflection ID:" they'll think it's something that's necessary for the transaction to be done.