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.
Oh, well… Maybe it depends on the languages. I’m using it with IT, ES, and EN and it does the job. BTW, maybe you need to download the dictionary?