http://www.epo.org/service-support/availability-of-online-services/2018/20180508.html
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We are currently
experiencing some issues with the Online Filing
EP update released 3 May 2018.

The issue concerns sections 6.1 of EPO Form 1200E (Euro-PCT
applications) which can presently not be completed. Until the bug is fixed, you
may add the information on which documents the further proceedings before the
EPO as designated Office are to be based in a separate letter or in section 17,
“Annotations”. Any amendments can be attached in the usual way.

Our technicians
are working to fix the problem as soon as possible.

We apologise for
any inconvenience.