Weird error/Missing tanks

Si___, on Aug 14 2020 - 07:17, said: Got this message, but nothing added to my garage   Mission fulfilled! Reward:
Vehicles added: Walküre (crew 100%), Varyag (crew 100%), Raven (crew 100%), Harbinger Mk. IV (crew 100%), Arlequin (crew 100%) Slots added: 5