It may help for those who are having the network error.
Currently, i'm using this version : CapCut_5_7_0_2075_beta2_capcutpc_beta_creatortool.exe (I didn't try with others versions, maybe it works)
Step 1: U have to open both, Capcut and Crack as admin
Step 2: Don't log in with ur capcut account, and create a new project. Doing this, the captions with templates, background remove etc... will work
Step 3: Make your video.
Step 4: After u have finished your video, go on export, and now u log in with ur account. (The network error will probably appear but just click on try again and it will work)
IMPORTANT: To create another video, just log out and create a new project and to the STEP 4 again to export.
Doing this i didn't have to create new accounts, so maybe u guys can try this.