Frequency capping not working with Ranking Formulas

We want to cap the amount of personalised offers that a user is seeing in the webpage. We used custom code channel. 

We created a campaign with a ranking formula and a decision policy. Inside the policy we added the frequency capping and set it to 3 displays per user per day. 

We followed this documentation:
https://experienceleague.adobe.com/en/docs/journey-optimizer-learn/frequency-capping-in-ajod/enable-capping

We enabled the itemId and the trackingTockens and we are properly sending and collecting those in the web page and Tags. All the info is reaching AEP, this is a display event. 
 

"_experience": {
        "decisioning": {
          "propositionAction": {
            "tokens": [
              "/vCRDDlX6uR7PIti7nB11w"
            ],
            "id": "dps:689105eb84a0ad4b943aa2d8967e7f09b45b034ee8a9f539:1c1087fec9796bcb"
          },
          "propositions": [
            {
              "scopeDetails": {
                "rank": 1,
                "correlationID": "3fe24028-0466-4b29-a056-3f5ea8b5009d-0",
                "decisionProvider": "AJO",
                "activity": {
                  "priority": 1,
                  "matchedSurfaces": [
                    "web://bank-demo-project.vercel.app/#hero-banner"
                  ],
                  "id": "cd21f43f-92dd-4444-94fa-504d5979aee7#cf8ba0b7-2cbe-44ed-bd10-f13d21609eca"
                }
              },
              "id": "144bb7d0-0738-4b9b-b277-c60bbdb20c68",
              "items": [
                {
                  "id": "cf19f46b-23e8-40de-aeb9-f2f18b8b4fc7"
                }
              ],
              "scope": "web://bank-demo-project.vercel.app/#hero-banner"
            },
            {
              "scopeDetails": {
                "decisionProvider": "EXD",
                "rank": 1,
                "strategies": [
                  {
                    "strategyID": "8aa3740d-f34a-4d5e-b0db-235a2eade5da",
                    "step": "decisionPolicy"
                  },
                  {
                    "strategyID": "web://bank-demo-project.vercel.app/#hero-banner",
                    "step": "placement"
                  }
                ],
                "activity": {
                  "priority": 1,
                  "matchedSurfaces": [
                    "web://bank-demo-project.vercel.app/#hero-banner"
                  ],
                  "id": "cd21f43f-92dd-4444-94fa-504d5979aee7#cf8ba0b7-2cbe-44ed-bd10-f13d21609eca"
                },
                "correlationID": "3fe24028-0466-4b29-a056-3f5ea8b5009d-0"
              },
              "id": "72348d6e-6ae9-4652-993e-a01e27269e2b",
              "items": [
                {
                  "name": "UC6 | Account creation | Investment",
                  "score": 101,
                  "id": "dps:689105eb84a0ad4b943aa2d8967e7f09b45b034ee8a9f539:1c1087fec9796bcb",
                  "itemSelection": {
                    "rankingDetail": {
                      "strategyID": "dps:ranking-function:1c108cb9e8d520dd",
                      "step": "formula"
                    },
                    "selectionDetail": {
                      "strategyName": "UC6 | Account creation",
                      "selectionType": "selectionStrategy",
                      "strategyID": "dps:selection-strategy:1c108d16b22904b6",
                      "version": "latest"
                    }
                  }
                }
              ],
              "scope": "web://bank-demo-project.vercel.app/#hero-banner"
            }
          ],
          "propositionEventType": {
            "display": 1
          }
        }
      },

The problem is that the user is always seeing the same offer. 

Just in case, I will attach the ranking formula too:

let offerName   = offer._experience.decisioning.decisionitem.itemName in
let priority    = offer._experience.decisioning.decisionitem.itemPriority in
let hasTag      = offer._experience.decisioning.decisionitem.itemTags.intersects(["3eb0e4e7-725e-45ca-bfe4-8e4e5c4b5ab6"]) in
let mainName    = _capgeminiamerptrsd.bankAccount.mainAccount.financialAccountName in
let savingsName = _capgeminiamerptrsd.bankAccount.savingsAccount.financialAccountName in
let hasMain     = mainName.isNotNull() in
let hasSavings  = savingsName.isNotNull() in

if(
  hasTag,

  if(
    hasMain AND hasSavings AND offerName = "UC6 | Account creation | Investment",
    priority + 100,

    if(
      hasMain AND (NOT hasSavings) AND offerName = "UC6 | Account creation | Savings",
      priority + 50,

      if(
        (NOT hasMain) AND (NOT hasSavings) AND offerName = "UC6 | Account creation | Checking",
        priority + 20,
        priority
      )
    )
  ),

  priority
)