Draft improvements from assistant conversations: clarify recurring gaps

documentation/guides/checking-eligibility.mdx

@@ -18,6 +18,18 @@ The qualifications API can be applied (among others) for:
 
 ![Product Catalog Coupon](/images/docs/c955bb2-campaign_recipes_qualification_checking_eligibility_productCatalogCoupon.png "Product Catalog Coupon")
 
+<Warning>
+The Qualifications endpoint evaluates redeemables **individually** and ignores the following rules:
+
+* Limit of total redeemed discount amount per campaign
+* Limit of total redemptions count per campaign
+* Redemptions per customer
+* Redemptions per customer in a campaign
+* Total amount before discount
+
+For scenarios that depend on stacked discounts or on enforcing per-customer/per-campaign redemption limits (for example, when a strike-through price relies on multiple discounts combined), use the [Validate Stackable Discounts](/api-reference/validations/validate-stackable-discounts) endpoint instead so the final price you display matches what the customer can actually redeem.
+</Warning>
+
 ## API endpoints
 
 There are two dedicated API Endpoints for checking eligibility:

documentation/guides/data-synchronization.mdx

@@ -136,4 +136,8 @@ The [update order](/api-reference/orders/update-order) endpoint updates the spec
 
 #### Import orders
 
-The [import orders](/api-reference/orders/import-orders) endpoint is used to import only historical orders into Voucherify. For on-going synchronization, the [create order](/api-reference/orders/create-order) and [update order](/api-reference/orders/update-order) endpoints should be used. Importing orders in bulk does not trigger distributions or earning rules.
+The [import orders](/api-reference/orders/import-orders) endpoint is used to import only historical orders into Voucherify. For on-going synchronization, the [create order](/api-reference/orders/create-order) and [update order](/api-reference/orders/update-order) endpoints should be used. Importing orders in bulk does not trigger distributions or earning rules.
+
+<Note>
+Unlike customers, vouchers, and loyalty cards, orders cannot be imported from a CSV file. Historical orders can only be imported via the [import orders](/api-reference/orders/import-orders) API endpoint (JSON payload, up to 2,000 orders per request, one import at a time per project).
+</Note>

documentation/integrations/shopify.mdx

@@ -29,7 +29,7 @@ What you get with the Voucherify - Shopify plugin:
 *   Shopify can be used as a distribution channel for **loyalty rewards and referral codes** – e.g. discount codes will be distributed to the connected Shopify store when the customer redeems a loyalty reward (e.g. discount code). This version of the integration allows you to synchronize data only when it is being created or updated. Old data won’t be automatically synchronized.
 
 <Note>
-Shopify supports only amount off and percentage off vouchers, both in discount coupons campaigns and referral programs.
+Shopify supports only amount off and percentage off vouchers, both in discount coupons campaigns and referral programs. Unit-based discounts – including free product and buy-one-get-one (BOGO) campaigns – are not supported by the Shopify integration.
 </Note>
 
 **For vouchers to work, they have to be published in Shopify first**. This process enables Shopify to create a copy of the vouchers. Note that not all Voucherify’s validation rules are processed by Shopify.
@@ -43,6 +43,7 @@ The following validation rules are supported by the Voucherify plugin for Shopif
 ### Unsupported features in the integration
 
 The following features are not supported by the Voucherify plugin for Shopify:
+*   Unit-based discounts, including free product and buy-one-get-one (BOGO) campaigns – only amount off and percentage off vouchers are supported
 *   Validation rules other than the ones mentioned above (e.g. validation rules set in a campaign will not be taken into consideration, including the validation rules based on metadata)
 *   Discounts that are applicable to items (e.g. when a discount is meant only for a specific product or group of products, this rule will be omitted and the discount will be applied to an entire order)
 *   Discount cap in Voucherify’s discount (e.g. when you set a limit to a percentage discount, for example 20% discount with a maximum discount value of 100$, the latter condition will be omitted, making it 20% discount without any limitations)