Predicted structure is way different from the RSCB PDB structure.

Hi, First of all, thank you for such amazing open source efforts. Also, I am very, very new to this domain, just started learning about protein structure prediction and folding.

While doing experiments with I used this random example of insulin complex [pdb_00008ez0] and I downloaded it's fasta sequence:

>8EZ0_1|Chains A, B|Insulin receptor|Mus musculus (10090)
HLYPGEVCPGMDIRNNLTRLHELENCSVIEGHLQILLMFKTRPEDFRDLSFPKLIMITDYLLLFRVYGLESLKDLFPNLTVIRGSRLFFNYALVIFEMVHLKELGLYNLMNITRGSVRIEKNNELCYLATIDWSRILDSVEDNYIVLNKDDNEECGDVCPGTAKGKTNCPATVINGQFVERCWTHSHCQKVCPTICKSHGCTAEGLCCHKECLGNCSEPDDPTKCVACRNFYLDGQCVETCPPPYYHFQDWRCVNFSFCQDLHFKCRNSRKPGCHQYVIHNNKCIPECPSGYTMNSSNLMCTPCLGPCPKVCQILEGEKTIDSVTSAQELRGCTVINGSLIINIRGGNNLAAELEANLGLIEEISGFLKIRRSYALVSLSFFRKLHLIRGETLEIGNYSFYALDNQNLRQLWDWSKHNLTITQGKLFFHYNPKLCLSEIHKMEEVSGTKGRQERNDIALKTNGDQASCENELLKFSFIRTSFDKILLRWEPYWPPDFRDLLGFMLFYKEAPYQNVTEFDGQDACGSNSWTVVDIDPPQRSNDPKSQTPSHPGWLMRGLKPWTQYAIFVKTLVTFSDERRTYGAKSDIIYVQTDATNPSVPLDPISVSNSSSQIILKWKPPSDPNGNITHYLVYWERQAEDSELFELDYCLKGLKLPSRTWSPPFESDDSQKHNQSEYDDSASESSSSPKTDSQILKELEESSFRKTFEDYLHNVVFVPRPSRKRRSLEEVGNVTATTLTLPDFPNVSSTIVPTSQEEHRPFEKVVNKESLVISGLRHFTGYRIELQACNQDSPDERCSVAAYVSARTMPEAKADDIVGPVTHEIFENNVVHLMWQEPKEPNGLIVLYEVSYRRYGDEELHLCVSRKHFALERGCRLRGLSPGNYSVRVRATSLAGNGSWTEPTYFYVTDYLDVPSNIAKIIIGPLIFVFLFSVVIGSIYLFLRKRQPDGPMGPLYASSNPEYLSASDVFPSSVYVPDEWEVPREKITLLRELGQGSFGMVYEGNAKDIIKGEAETRVAVKTVNESASLRERIEFLNEASVMKGFTCHHVVRLLGVVSKGQPTLVVMELMAHGDLKSHLRSLRPDAENNPGRPPPTLQEMIQMTAEIADGMAYLNAKKFVHRDLAARNCMVAHDFTVKIGDFGMTRDIYETDYYRKGGKGLLPVRWMSPESLKDGVFTASSDMWSFGVVLWEITSLAEQPYQGLSNEQVLKFVMDGGYLDPPDNCPERLTDLMRMCWQFNPKMRPTFLEIVNLLKDDLHPSFPEVSFFYSEENKAPESEELEMEFEDMENVPLDRSSHCQREEAGGREGGSSLSIKRTYDEHIPYTHMNGGKKNGRVLTLPRSNPS
>8EZ0_2|Chains C[auth D], D[auth E], E[auth F], F[auth G]|Insulin|Homo sapiens (9606)
MALWMRLLPLLALLALWGPDPAAAFVNQHLCGSHLVEALYLVCGERGFFYTPKTRREAEDLQVGQVELGGGPGAGSLQPLALEGSLQKRGIVEQCCTSICSLYQLENYCN

And I ran this command:

colabfold_batch --templates --amber insulin_sample.fasta results/

Everything ran successfully, I got a descent pLDDT score of 77.1, and I downloaded this PDB:

8EZ0_2_Chains_C_auth_D___D_auth_E___E_auth_F___F_auth_G__Insulin_Homo_sapiens__9606__relaxed_rank_001_alphafold2_ptm_model_1_seed_000.pdb

which to my knowledge is the most stable predicted structure. However when I visualize the PDB, I get something like this

Green one is the visualization of the generated structure and the complex structure in the back is the actual from RSCB PDB.

My question is:

1. What am I doing wrong here? Am I interpreting things differently?
2. Did my input fasta is wrong, should I have used : for multimers?
3. Anything else I have to be aware of in general when I am doing prediction of complex molecules or multimers?

Because the same thing happened in the case of hemoglobin complex as well.

Reproduce the issue with the supplied insulin_sample.fasta and colabfold_batch --templates --amber insulin_sample.fasta results/. Compare the generated 8EZ0_2...pdb with RCSB structure 8EZ0, then determine whether the sequence format or multimer syntax explains the difference. Done means documenting the cause and the correct input or interpretation guidance.