Since yesterday, the really cool fork of openboard with active development and support of adding a swype library manually, got rebranded into Heliboard. A release on izzyondroidrepo and fdroid should be coming soon.
PS. If you are using the old fork you have to remove it first and do a backup of your settings.
I’ve failed to get that to work. How do you actually get additional languages?
press on the downloaded language and set a secondary dictionary.