8.0 didn't have web support at all for a long time, re-adding it was very recent. I'm not sure how well it works yet. Itch and renpy both have a variety of issues with web versions unfortunately; there's missing functionality and major issues on itch's end as well as what seem to be effectively unfixable problems on renpy's end for a web game as complicated as this.
It's possible I will be able to find a workable middle ground down the road, but right now I can't make any promises about web version anytime soon.