Imei and wifi lost after flash e/os

The VEUX is not officially supported by /e/, so you will probably have installed a so-called unofficial CustomROM, e.g. the one from @ronnz98 . Why don’t you mention important specifics?

Well, the loss of IMEI and Wi-Fi when installing a CustomROM is unusual. The bug will be in this unofficial /e/OS-T CustomROM.