fix credit addition for topup and monthly

app/helpers/billing_helper.rb

@@ -8,7 +8,10 @@ module BillingHelper
     # Return false if not plans are configured, so that no checks are enforced
     return false if default_plan.blank?
 
-    account.custom_attributes['plan_name'].nil? || account.custom_attributes['plan_name'] == default_plan['name']
+    # Handle both string and hash formats for default_plan
+    default_plan_name = default_plan.is_a?(Hash) ? default_plan['name'] : default_plan
+
+    account.custom_attributes['plan_name'].nil? || account.custom_attributes['plan_name'] == default_plan_name
   end
 
   def conversations_this_month(account)

enterprise/app/services/enterprise/billing/handle_stripe_event_service.rb

@@ -89,14 +89,29 @@ class Enterprise::Billing::HandleStripeEventService
     amount = extract_credit_amount(grant)
     return if amount.zero?
 
+    grant_type = extract_grant_type(grant)
     service = Enterprise::Billing::V2::CreditManagementService.new(account: account)
-    service.add_response_topup_credits(amount)
+    if grant_type == 'monetary'
+      service.add_response_topup_credits(amount)
+    else
+      service.sync_monthly_response_credits(amount)
+    end
   end
 
   def extract_credit_grant_id(grant_object)
     grant_object.respond_to?(:id) ? grant_object.id : grant_object['id']
   end
 
+  def extract_grant_type(grant)
+    amount_object = extract_attribute(grant, :amount)
+    return 'monetary' if amount_object.blank?
+
+    type = extract_attribute(amount_object, :type)
+    return 'monetary' if type.blank?
+
+    type
+  end
+
   def extract_credit_amount(grant)
     # First, try to get credits from metadata
     metadata = extract_attribute(grant, :metadata)
@@ -104,7 +119,6 @@ class Enterprise::Billing::HandleStripeEventService
       credits = extract_attribute(metadata, :credits)
       return credits.to_i if credits.present? && credits.to_i.positive?
     end
-
     amount = extract_attribute(grant, :amount)
     return 0 if amount.blank?