Hmm very very weird.
I mean even if the Database somehow got rolled back, since it is an independent system from everything outside and inside the game it would mean at least, that the tool would still show 1000 Health, which is not the case.
Maybe @Jascha can implement a character stat history log but so far we can’t reproduce or understand what happened weeks ago.
But since the season still goes for awhile what you can do is to click the red big button at the bottom. Reset everything and you can spend your Skill Points fresh towards 1000 Health after 10 days.
I don’t know what you mean with “buy” but some player are confused about my logic. Maybe I have a strange logic but All Skills points do not COST Skillpoints but just REQUIRE. Only the red Reset button at the bottom “cost” Skill Points (20+) which means they are removed from you.
A major rework of the Skill Point + Skill system is planned for HWS 8.X or HWS 9 since Alpha 8 consumes too much time with reworking everything (Universe) from scratch again.