Can my tenants still reach me easily?

Yes, and arguably more easily than before you moved. Tenants message you and report maintenance issues inside their own August app, with photos, and you pick everything up on your schedule rather than at 3am local time. Your personal number stays private, which matters more once it's a foreign number tenants might hesitate to call. Every conversation and repair is timestamped and on record, so if a dispute ever reaches a deposit scheme or an ombudsman, the history is there in order. Nothing depends on a WhatsApp thread that lives on one phone in one country.