Vaughan Gething used the money to help fund his ( failed ) campaign for leader of the Welsh Lsbour party, none of the money went to the party itself.
Personally, I think there is a difference between "environmental crimes" and accepting money from convicted, and admitted, fraudsters. In both cases the money should not have been accepted, but the subliminal inferences in the case of Reform should ring alarm bells, within the party and without.