VPN blocking my internet

hello, I keep getting error 9 when I’m trying to connect to my work wifi. For 2 years it was all working fine but for couple of days now it won’t connect? I would log off the wifi and activate thru my wireless data and the vpn would connect. And when I try to connect to the wifi again( the vpn is still active) it would not load any pages, it seems like it’s blocking the wifi? And yes, I deleted and install and approve all. The weird part is my coworker whose the same Bitdefender VPN works. Please help. Thank you