@ricki-z Much better now, thanks 
Certificate chain
0 s:CN=firmware.sensor.community
i:C=US, O=Let's Encrypt, CN=R3
a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
v:NotBefore: Mar 17 09:19:11 2024 GMT; NotAfter: Jun 15 09:19:10 2024 GMT
1 s:C=US, O=Let's Encrypt, CN=R3
i:C=US, O=Internet Security Research Group, CN=ISRG Root X1
a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
v:NotBefore: Sep 4 00:00:00 2020 GMT; NotAfter: Sep 15 16:00:00 2025 GMT
2 s:C=US, O=Internet Security Research Group, CN=ISRG Root X1
i:O=Digital Signature Trust Co., CN=DST Root CA X3
a:PKEY: rsaEncryption, 4096 (bit); sigalg: RSA-SHA256
v:NotBefore: Jan 20 19:14:03 2021 GMT; NotAfter: Sep 30 18:14:03 2024 GMT
OTA is working again.