Thank you for your picture. A physical exam would give me the best answer to your issue. It appears that you still have laxity of your abdominal wall. This may be due to failure of the hernia repair and/or relaxation of your muscle repair. Your belly button is scarred in too tightly (stenotic). There are some procedures to improve the appearance. Seek second opinions from plastic surgeons in your country.
Earl Stephenson, Jr, MD,DDS, FACS