Hi Egill,
us-IS is icelandic correct?
It doesn't look like Icelandic is supported in bot flows
https://help.mypurecloud.com/articles/genesys-cloud-supported-languages/
Genesys doesn't have consistent language support across their flows, en-nz although recentlyish got added to bot flows is still missing from other areas. But they are constantly adding more language support which is nice.
I suggest you check out the Ideas portal and vote on ideas supporting the language modals you are after and creating an Idea if what you are after is missing.

You may want to look at other bot providers that integrate with Genesys like Google Diaglowflow or Amazon Poly
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Anton Vroon
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