125Khz with "clone protect" flag?

Well, “bad news” and good news.

BAD NEWS (not really)
The one you bought is an older version of the latest (RDV4)
Yours is the RDV2

The one that will do what you want, is only ⅓ the price


The one you bought, will probably do what you want, I am not really familiar with the RDV2, but generally you will find MOST people will have either the
Proxmark3 Easy ~$50
Proxmark3 RDV4 ~$300

As I mentioned, there is probably no reason the RDV2 wouldn’t do what you want, but you could save yourself €100

Whatever you decide

here’s a setup guide

here’s a more simple version of it: