Dear GTOWizard support,
I have a request on behalf of myself and at least four other players who regularly play my stakes and with whom I’ve discussed this matter.
We play in the Italian pool, where several Heads-Up (HU) tables are still active. We’re kindly asking if you could add HU ranges — in the “Only Preflop” section — for games with rake higher than NL500. Specifically, the rake in our games is around 5.5% with a 1.25% cap.
We’re making this request because, for 6-max, ranges are available all the way up to NL10k. It’s a pity that for HU the ranges currently stop at NL500, even though rake remains high — and I imagine this is also the case for other global sites.
We hope you’ll consider adding these ranges, and we look forward to your feedback.
Thank you and have a great day!

We’ve mostly stopped producing new preflop sims, so it’s unlikely that will happen.
Your best option is to wait for the upcoming preflop AI solver, which should be released relatively soon.