Sudan and Somalia both have significant English usage, in Sudan among younger, urban, and internationally connected buyers, and in Somalia across a genuinely global diaspora in English-speaking countries. For a seller, that's a real, addressable audience beyond the purely domestic market.
Using English without losing your local base
Linkaty's page toggles cleanly between Arabic and English, so this isn't an either-or choice, a domestic buyer sees the page in Arabic, an international or diaspora buyer sees it in English, same content, same products, same ordering options.
What changes for an English-reading audience: shipping and delivery expectations are different (a diaspora buyer abroad isn't ordering cash-on-delivery, they're likely asking about international shipping or a gift-for-family arrangement), so be explicit on the page about what you can actually fulfill for buyers outside the country. WhatsApp remains the connector for both audiences either way.
Don't choose one language over the other, use both, and let each buyer see the version that actually applies to them.