Hi Igor, did you change your sig?

 

# gpg --keyserver ha.pool.sks-keyservers.net --recv-key DF00FAF1C577104B50BF1D0093D6889F9F0E78D5
gpg: key 93D6889F9F0E78D5: public key "Igor Pecovnik <igor@armbian.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1

# ls -la
total 384004
drwxr-x---  2 dev  dev         80 Mar 12 01:38 .
drwxrwxrwt 21 root root       540 Mar 12 01:38 ..
-rw-r--r--  1 root root 396181864 Mar 12 01:12 Armbian_21.02.3_Nanopineo2_buster_current_5.10.21.img.xz
-rw-r--r--  1 dev  dev        833 Mar 12 01:38 Armbian_21.02.3_Nanopineo2_buster_current_5.10.21.img.xz.asc

# gpg --verify Armbian_21.02.3_Nanopineo2_buster_current_5.10.21.img.xz.asc
gpg: assuming signed data in 'Armbian_21.02.3_Nanopineo2_buster_current_5.10.21.img.xz'
gpg: Signature made Tue 09 Mar 2021 04:19:15 SAST
gpg:                using RSA key DF00FAF1C577104B50BF1D0093D6889F9F0E78D5
gpg: BAD signature from "Igor Pecovnik <igor@armbian.com>" [unknown]

gpg --verify Armbian_21.02.3_Nanopineo2_buster_current_5.10.21.img.xz.asc 
gpg: assuming signed data in 'Armbian_21.02.3_Nanopineo2_buster_current_5.10.21.img.xz'
gpg: Signature made tor 09 mar 2021 03:19:15 CET
gpg:                using RSA key DF00FAF1C577104B50BF1D0093D6889F9F0E78D5
gpg: Good signature from "Igor Pecovnik <igor@armbian.com>" [unknown]
gpg:                 aka "Igor Pecovnik (Ljubljana, Slovenia) <igor.pecovnik@gmail.com>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: DF00 FAF1 C577 104B 50BF  1D00 93D6 889F 9F0E 78D5

 

Looks good to me. Must be some other problem.