7th problem (hint1) (hint2)

Station X,

 

December 1941, the 19th,

 

Dear Mister Tutte,

 

We know you are busy with another business.

But your ancient colleagues need you.

 

We have intercepted a message from
31
12N 2955E.

Please, decipher it. This should be easy.
A spy sold us the key.

 

NOTTE ERPJY FAQVL MXLCM FGANI NALXW TFQVA NASLK FXRIA

WCPNZ CXRDY INPSX CDDQP LSBUB TCLJH JVTBW GSMHA ITQYX

MOJSO WNBZW FAKKA OVUBO CAIZP BVNFC ELAIN IKYQP AYCPD

XAGTE LPLBV ZOEKT CHIFM THUWO DLKHD GWAIX OCUBW FKBYC

GAGJY UXDHZ IBHFW BPIKX PKMLI WGDPA JQLDS LZDEC GEHMO

XNXYE TLVUD NAQWP EGUGN LVHHO JQHIM KHPKA SMAXD QXPEZ

HXXXX NOTTE