Hi,
Released archipack 2.3.4 today,
this version is a hotfix for blender 2.91+ boolean performance issues and many small bugfixes.
As usual either auto update using addon updater, or request a dowload link through e-mail using official website. Setup over old version and restart blender.
You’ll recieve a download link for the addon right in the mailbox in use for your gumroad / patreon account.
Feel free to contact the support if for some reason it doesn’t work for you.