What do you see when you try to access the channel? Approximately how many subscribers did the channel have?
Telegram doesn't provide an intuitive dashboard for appealing channel bans, but official channels do exist. Use them strategically and systematically. how can i recover my banned telegram channel work
The safest approach is using Telegram's built-in export feature: What do you see when you try to access the channel
Register a new channel using a clean, unflagged phone number. If possible, avoid using the exact same username handle immediately, as the system may reserve or blacklists the old handle for a period of time. Implement Strict Safety Measures unflagged phone number. If possible
to see if there is a set expiration date for the restriction Telegram Messenger Critical Success Factors for Recovery
Was your banned along with the channel?