Hi Zeinab,
Convergence can be very tricky to solve with all kinds of non-linearity. Please check the below Ansys video on handling distortion issues with Hyperelastic material. You can try the changes explained in the video and see if it helps.
https://www.youtube.com/watch?v=fI2a_xP0veI
Also, try to check the Newton-Raphson residuals and element distortion to check which location is having issues. After finding the problematic region, you can check for the issue and make changes accordingly.
Thank you,
Akshay Maniyar
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