I threatened the report because I wanted to annoy the OP who seems to be a leftist. I can only threaten OP this way because leftists created this stupid GDPR legislation, which I have to deal with almost every day.

A report to the ULD will also most likely only result in a slap on the wrist.

I actually did them a favor by pointing out their problems, because some german law firms use crawlers to detect GDPR and other violations. They then send cease-and-desist orders and collect expensive legal fees for that.