I´ve experienced the same. Smilodon and DBA felt like they “disappeared” for some time. But when I´ve focused on the images I could feel at least a little internal change and different behaviour from people around me.
As long as you have bought it legally, it is tied to you, so no worries.
Aura Cleanse and Ego Dissolution could help here.
Listening to the audios can be a great way to connect better with them. Also being grounded enough. If you are constantly in your head, it will be harder to notice effects.
You get accustomed to the energy overtime, meaning you won´t necessarily feel them like on the first day. Rest assured they are working in the backround.
For me, feeling them is also very dependent on my etheric and mental health.
Especially Gratitude seems to help a lot in giving results.
Aura Repair, Soul Restoration Series and Three Treasures, Ojas definetly increased their effectiveness. The more NFTs you own the more taxing it can get, so heal and expand your energy system with Attunement and Energy Expansion Card.
QKA NFT is cheap and helped me to assimilate more NFTs and fields daily.
Pranayama and Semen Retention.
Btw, porn wrecks havoc on your system, will definetly make it harder.
Just suggestions, play around with them and see what fits for you.
Surely there are more aspects. Read Sammys and Desirees post on the topic.