Stuck on Welcome screen

Am testing Ninja v 5.1.48 on a public hosting provider. I’ve installed with Softaculous. Ninja opens but gets stuck on the “Welcome to Invoice Ninja” box. Some of the selections behaves funny, like the language I can select and then it dissapears as soon as I move to currency. When I do manage to get all the fields filled and press SAVE the dialog just flashes and nothing happens. I can not get past this screen.
Has anybody got suggestions?


It may help to load /update

I also suggest updating to the latest version.