DKIM error message

Hello,
I am getting this error.
I am using DNS of digital occean. Though I have used the DKIM TXT DNS with the public key at digital occean and also at my domain name registar I am getting this error.
Can someone guide me.
Thanks

The DKIM signature of your message is:

v=1;
a=rsa-sha256;
c=relaxed/simple;
d=infovore.in;
s=default;
t=1578041133;
bh=mEMoqKCLC3ENZNk9ySmUWxC2lBI8RlVzrvh/RRHryys=;
h=Date:From:Subject:To:From;
b=BYMElE2S4G1IQ+IQDCudPAMk2H5cjzA4GwD+lUnMJ6ECeyE1h4GVMHTr/gI689k4dRBXPq1BY9jhgKjNtLZd0SDwnuZsy2XXcHo/cxOOxMDdgdNzK5UpaPpPWWAhIQ9RKdLgdpM0OdYeI2qK7Zovr1FNbPAye/gq1GdvrfkOko8CMsqJmaD9fUWZ1SzTYJt5zvLQoCvquLI+Jj3OgG+Dhe0QHmXwo11oBUJDYre2wJBLvMXQbaiIRO2NTTlFAnBnCK7zWcIyZgqxZoou2gkyKe7pTXA3uooGIBFeotARtFWgG1/uLOpO8R0UXM0zV6OX2Cipd0RI0ErwRFgyBtyAPg==

We were not able to retrieve your public key.
Please ensure that you inserted your DKIM TXT DNS record on your domain infovore.in using the selector default.
If you recently modified your DNS, please be patient and test again your Newsletter in 12 hours, it may take some time for the DNS to be propagate

I have the same problem with the servers. Are’t recognizing the DKIN public key
SPF: PASS
DKIM: ‘FAIL’
DMARC: ‘PASS’
ps.: even the updrage is installed