TikTok Account Recovery Problem After Changing To a New Device

I have been unable to access my TikTok account @njoro343 since I started using my new phone last month. I have tried logging in with my phone number, email and username, but I cannot access the account at all. The system keeps saying that my phone number is already in use, although this is my only official number and it is the same one I used before. On my previous phone, I always logged into TikTok using my phone number +2547481778** without any problem, so I am very confused about why I suddenly cannot use it now on my new device. I contacted TikTok support and used the available help options, but so far I have not received any effective assistance or solution. I kindly request that my TikTok account @njoro343 be recovered and unlocked, that I be given a secure way to log in again on my new phone, and that my official phone number +2547481778** be correctly linked and updated if necessary. I ask for this issue to be investigated and resolved as soon as possible so I can regain access to my account.