Official-source guide
Holafly's official discount page lists MYESIMNOW5 for 5% off a short-trip eSIM and MONTHLYPLAN10 for 10% off a monthly plan. Use the code that matches the product you select; Holafly says only one promo code can be applied per purchase.
Official source checked: 2026-09-24T00:48:00Z
Holafly labels MYESIMNOW5 as 5% off for short trips and says it is valid for any destination available in the Holafly Shop.
Holafly labels MONTHLYPLAN10 as 10% off for monthly plan subscriptions. Its official FAQ says this code applies to a monthly plan in the Plans section.
No. Holafly's official FAQ says only one promo code can be applied per purchase. Pick the code that corresponds to the plan you are buying rather than trying to stack both.
Holafly's iPhone installation guide says to install the eSIM shortly before a trip and wait until you arrive at the destination to activate it. This setup timing is separate from entering a discount code at checkout.
Holafly's setup support uses the message Code no longer valid for an eSIM-installation issue. Its guidance says the eSIM may already be installed or the connection may have dropped. That message is not, by itself, a statement that a checkout discount code failed.