Offer got removed after starting it.

Yesterday I started an offer for Raid Shadow Legends and spend a good chunk of time and money on it. Today I woke up to the offer beeing completely gone from my account. The pending goals are still shown in my history. Unfortunately I do not have a screenshot from the original offer.

https://imgur.com/a/6cuoC9U

This is feels very scummy to say the least and I'd like to know what's going on. I just started using this site a few weeks ago and if this was an intentional decision and not a bug or glitch it is completely unacceptable no matter the reasoning. This completely destroys any trust and willingness to spend time and money on this app.

Any clarification is appreciated.