OpenVPN connection as client failed - Help needed

Hello,
I have Debian 10 VPS at google, run a OpenVPN server:
OpenVPN 2.4.7 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Feb 20 2019
library versions: OpenSSL 1.1.1d 10 Sep 2019, LZO 2.10
on it, and I would like to connect mikrotik as client.
(at home I have mobile connection and no public IP available - and I would like to have access to my home from outside)
I registered 3 clients, generated .ovpn file for each: android phone and windows laptop connect without any problems;
at mikrotik i uploaded .ovpn file and import certificates and key:
/certificate import file-name=mikrotik.ovpn
my ovpn file:

client
dev tun
proto tcp
remote xxxxx.noip.pl xxxxx
resolv-retry infinite
nobind
persist-key
persist-tun
remote-cert-tls server
auth SHA512
cipher AES-256-CBC
ignore-unknown-option block-outside-dns
block-outside-dns
verb 3

(My mikrotik routerOS version is 6.47.4)
then I added Ovpn Client connection in mikrotik as OVPN Client

of course I changed host, port and username.
and connection is not success,
mikrotik log:

20:31:19 ovpn,info ovpn-vobo: initializing... 
20:31:19 ovpn,info ovpn-vobo: connecting... 
20:31:19 ovpn,info ovpn-vobo: terminating... - peer disconnected 
20:31:19 ovpn,info ovpn-vobo: disconnected

I will be greatful for any help

no one has any clue where to search for help?

You have sha512 in ovpn config, but sha1 on RB (which doesn’t seem to support anything better).