My certificate has expired I can't renew it, I tried several things

these errors pointed out by letsdebug, should I worry about correcting this?

For example connection error refused, it seems to me that this test cannot connect to port 80 through the AAAA / IPV6 register, there is some action you can do to make this register pointing to the same address as the A / IPV4 register, this could correct this problem it will be?