How do I get coupons? Register for a customer account on pllashes.com and activate your account. Some special activities which are sent by Instagram or to your email Or on Coupons Page. Coupons are a great way to save money. How do I use my coupons? Make sure the coupon has not expired (most will show the expiry date in your account). During the checkout process, go to your shopping cart. Enter the full promotion code and click “Apply”. You can only use one coupon code per order.