You can go to receive tab in yoroi and check if this address is present there… if yes just refresh the app… if u are using mobile version pull down with the finger on main dashboard (transaction )
addr1qyr5guedn0uehekrpaw5s2z5a447g3s8phdstxs2nvpy79ekmswccmu9hwengwyl2m4n3lx7f37p6mvpwf3p8h44td6qln3lav
I see many times these days the sync error message
Cheers,
Next time if needed, @Alexd1985 is IMO very good with solving issues like this. Just info for further issues 
It worked. Thank you so much! Can you send me your PayPal address so I can send you some money for your help?
No need @Nicolas1 . Just click like on all of my replies in this post, that would be sufficient. Glad to help. Have a great day man 
And visiting my topic would be great also & you could find some guide there:
Also u can support @andreassosilo by delegating to his pool for rewards
Maybe you could refer @Nicolas1 to your stake pool @Alexd1985 
I don’t run any stake pool.
I am just a translator, delegator and would like to be blockchain developer in Cardano network soon.
Thanks anyway.