Edit your profile to update the to point to your custom location. Set up custom DITA-OT in AEM Guides - Experience League
It is highly recommended to run the integrator tool on a Mac or Linux system to ensure file path compatibility across platforms. Re-package the ZIP
Use the command line to install new plugins: dita --install .zip .
Download the "out-of-the-box" version from the path /etc/fmdita/dita_resources/DITA-OT.zip in your AEM instance.