I saw that too in my PayZapp app. I called my HDFC RM, and sent her the banner photo.
She spoke with the CC team and informed me that it is not LTF even though the banner shows it as LTF. It will be chargeable. For my account specifically, it would be FYF.
Be aware of HDFC CC LTF Traps.
Update (Edit): My RM called me today and informed me that they were informed by the officials that Pixel actually has LTF offers and they will be able to provide LTF.
But there are many people who have reported issues with Pixel Card - Splitting Credit Limits (not sharing credit limits) from other cards, and facing a lot of complexities later on to get back the limit back to old card and join it back.