I trust you are well
Kindly note that VDSL like ADSL Use copper wire thus can be easily affected by various factors incl: weather, electrical interference, line quality and distance from the exchange.
KIndly follow below link for troubleshooting guides.
If you require further assistance,
please send a message to our WhatsApp helpline: https://whatsapp.afrihost.com
or visit our Help Centre: https://help.afrihost.com/
or see our FAQ page: http://faq.afrihost.com