Validation of LOS failed?

EDIT: My question is, are both “LOScoins” and “LineaGenuine” nonsense and supposed to be a joke? Or only the LOScoins?

Thanks for the solutions to get rid of the warning! But I am still interested in why this happened in the first place. The LineageOS we use is “official” in the sense that it is released from LineageOS itself and we download from their servers, correct? But now it is no longer a “certified build”? What does that mean and why not? Will Will later builds become certified or is this impossible for the FP2? Is this related to the device requirements discussed here?