Opel Antara Bj 2007 display and tank status F

Hello, I’m new here in the forum. I drive an Antara from 2007, 4×4 with 150 hp. After I replaced the car battery, the following error occurred to me. Now I honestly wonder if this error is related to the battery change. I switched from a 70Ah battery to a 60Ah battery. The problem concerns the display. I add an image so you know what it’s about. In addition, a second problem has occurred. When I try to get the car to st As soon as the car is started, the tank status drops to zero and “F” is displayed in the clock display. Unfortunately, I forgot to take a picture of it. Thank you for your feedback.