Replace my Xi6-T wireless unit & a n EPS-3 Adapter for the XG1v4-A unit

I believe the Xi6-T wireless unit is shot as that the adapter is fine.  My XG1v4-A unit needs a new EPS-3 adapter.  Unfortunately, I am not in a position at the moment to head to an Xfinity Store.  Would it be possible to mail and adapter to my home?

Thanks in advance