Lufthansa compensation 18 September 2019 at 9:08AM in Flight delay compensation

Hjbw

Have received offer of comp after complaining to Lufthansa. They want among other details of bank etc my photo I.d. But then also a separate photo of me? Anyone else been asked for this? The offer comes as an attachment to an email from them but when open the attached it’s just written on plain sheet of paper, no Lufthansa heading or anything. Just not entirely sure it’s real!