A: Unlikely. They don’t forbid VPNs in their ToS, but they do forbid "artificially circumventing download restrictions." The worst that happens is a temporary IP block. Just switch servers.
If you frequently download from 1fichier for entertainment (e.g., media, backups, game mods), the most reliable approach is a premium account or finding alternative hosts with fewer restrictions. how to bypass 1fichier waiting time full
Alex downloaded a reputable VPN and installed a browser extension that allowed him to switch between multiple proxy servers. He then configured the extension to use a new proxy server each time he wanted to download a file. By doing so, 1Fichier's system couldn't track his IP address or detect that he was the same user downloading multiple files. A: Unlikely