Need advise to restore or re-install FP Open OS with TWRP

Luckily I have the fp2-sibon-16.06.0-ota_from_gms-userdebug.zip file. My problem is that I cannot access to the web because of my mistake nor downloading any app, which is why I n

Extracted files contain a recovery, a system and a META-INF folder and also a boot.img and a file_contexts files. What do you recommend ? Do I have to delete the recovery folder only and then Zip the files and folders again before to launch TWRP ? Or do I have to change or move something else ?

Thx