[Delay in notification on Android Smart Phone]

I am facing this issue constantly. Just right now I noticed it is 0one hour and 3 minutes after that I received a notification on the mobile app. Can anyone guide me how to resolve this issue?

[Delay in notification on Android Smart Phone]

Dear Community Members,

I am facing the issue that after getting any inquiry in my inbox, I get a notification on my Android smartphone almost 30 minutes to 1 hour later. Is it an issue with my notification settings or any other case?

[Refund claim from the Buyer.]

Dear Everyone,

I am a new seller on Fiverr. I got a customized offer for 2 and half hour session to provide coaching to buyer on finance. He accepted the offer and I shared with him a link for a meeting on Fiverr through google meet for two and half hours session. After the conclusion of the session. I sent him a delivery but he is claiming for refund. I have delivered him again saying that you are asking for a refund after having a session. What I can do? Anyone plz guide me.